The Experts below are selected from a list of 7659 Experts worldwide ranked by ideXlab platform
Yang Yang - One of the best experts on this subject based on the ideXlab platform.
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perovskite polymer monolithic hybrid Tandem Solar Cells utilizing a low temperature full solution process
Materials horizons, 2015Co-Authors: Chun-chao Chen, Gang Li, Ziruo Hong, Weihsuan Chang, Qi Chen, Huanping Zhou, Yang YangAbstract:In the current study, a monolithic integration of perovskite and polymer subCells into a Tandem structure is realized through a full solution process. The wide bandgap perovskite absorber (CH3NH3PbI3) is processed via a one-step deposition employing an additive-assisted solvent wash method. In particular, a small molecule additive, BmPyPhB, is added into the precursor solution to improve the uniformity of the initial nucleation process of the crystal by providing heterogeneous nucleation sites throughout the solution space. Next, a solvent wash method is employed to induce the fast crystallization of uniform and well-defined grains in the absorber layer as well as to reduce the requirement for thermal annealing. Thus, the highest power conversion efficiency (PCE) of 9.1% is obtained for a single junction, planar-structured CH3NH3PbI3 Solar Cell. For the polymer absorber, a new IR-sensitive block copolymer, PBSeDTEG8, with photosensitivity up to 950 nm is utilized to broaden the photoresponse of the Tandem Solar Cell. More importantly, this polymer:PCBM blend exhibits improved thermal stability, which can endure thermal annealing process while fabricating the perovskite subCell. Subsequently, this hybrid Tandem Solar Cell based on perovskite/polymer subCells achieves the highest efficiency of 10.2%.
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perovskite polymer monolithic hybrid Tandem Solar Cells utilizing a low temperature full solution process
Materials horizons, 2015Co-Authors: Chun-chao Chen, Ziruo Hong, Weihsuan Chang, Qi Chen, Huanping Zhou, Sanghoon Bae, Yang YangAbstract:In the current study, a monolithic integration of perovskite and polymer subCells into a Tandem structure is realized through a full solution process. The wide bandgap perovskite absorber (CH3NH3PbI3) is processed via a one-step deposition employing an additive-assisted solvent wash method. In particular, a small molecule additive, BmPyPhB, is added into the precursor solution to improve the uniformity of the initial nucleation process of the crystal by providing heterogeneous nucleation sites throughout the solution space. Next, a solvent wash method is employed to induce the fast crystallization of uniform and well-defined grains in the absorber layer as well as to reduce the requirement for thermal annealing. Thus, the highest power conversion efficiency (PCE) of 9.1% is obtained for a single junction, planar-structured CH3NH3PbI3 Solar Cell. For the polymer absorber, a new IR-sensitive block copolymer, PBSeDTEG8, with photosensitivity up to 950 nm is utilized to broaden the photoresponse of the Tandem Solar Cell. More importantly, this polymer:PCBM blend exhibits improved thermal stability, which can endure thermal annealing process while fabricating the perovskite subCell. Subsequently, this hybrid Tandem Solar Cell based on perovskite/polymer subCells achieves the highest efficiency of 10.2%.
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Tandem Solar Cell—Concept and Practice in Organic Solar Cells
Topics in Applied Physics, 2015Co-Authors: Ziruo Hong, Letian Dou, Yang YangAbstract:In the past decade, organic Solar Cell (OPV) technology has been intensively studied and improved significantly due to its attractive properties in manufacturability, flexibility, light weight etc. The power conversion efficiency (PCE) has been enhanced dramatically from ~2–3 to ~12 % through materials, interface and device architecture innovations such as Tandem. This chapter focuses on multi-junction or Tandem Solar Cell which is the architecture for highest Solar Cell efficiency. First, the principle of Solar photovoltaic process and the theoretical limits of Solar Cell in single and multiple junction Cells were presented. After the brief description of the realization of Tandem Cell concept in inorganic Solar Cells, we provided an overview of the development of organic Tandem Solar Cells. This includes two very distinct technologies—vacuum deposited small molecule Tandem Solar Cells, and solution processed polymer Tandem Solar Cells. The progress in active materials with different bandgap, interconnection layer, and Tandem device structure are presented.
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Tandem Solar Cell concept and practice in organic Solar Cells
2015Co-Authors: Ziruo Hong, Letian Dou, Yang YangAbstract:In the past decade, organic Solar Cell (OPV) technology has been intensively studied and improved significantly due to its attractive properties in manufacturability, flexibility, light weight etc. The power conversion efficiency (PCE) has been enhanced dramatically from ~2–3 to ~12 % through materials, interface and device architecture innovations such as Tandem. This chapter focuses on multi-junction or Tandem Solar Cell which is the architecture for highest Solar Cell efficiency. First, the principle of Solar photovoltaic process and the theoretical limits of Solar Cell in single and multiple junction Cells were presented. After the brief description of the realization of Tandem Cell concept in inorganic Solar Cells, we provided an overview of the development of organic Tandem Solar Cells. This includes two very distinct technologies—vacuum deposited small molecule Tandem Solar Cells, and solution processed polymer Tandem Solar Cells. The progress in active materials with different bandgap, interconnection layer, and Tandem device structure are presented.
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Recent trends in polymer Tandem Solar Cells research
Progress in Polymer Science, 2013Co-Authors: Jingbi You, Letian Dou, Ziruo Hong, Yang YangAbstract:Polymer Solar Cells have many intrinsic advantages, such as their light weight, flexibility, and low material and manufacturing costs. Recently, polymer Tandem Solar Cells have attracted significant attention due to their potential to achieve higher performance than single Cells. This trend article intends to provide the latest progress in polymer Tandem Solar Cell technology with a focus on active layer materials and interfacial materials for sub-Cell interconnection. Following an introduction of the structure and current status of polymer Tandem Solar Cells, this article will review polymers which have been, and could be used, for Tandem Solar Cells. Furthermore, this article will discuss the interconnecting layer consisting of p- and n-type interfacial layers, which is equally critical for polymer Tandem Solar Cells. Finally, because Tandem Solar Cell measurements are more complicated than that of single Solar Cells, this article will also address polymer Tandem Solar Cell measurement issues.
Yinhua Zhou - One of the best experts on this subject based on the ideXlab platform.
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Efficient Top-Illuminated Organic-Quantum Dots Hybrid Tandem Solar Cells with Complementary Absorption
ACS Photonics, 2017Co-Authors: Jinhui Tong, Xiaokun Yang, Jiang Tang, Haisheng Song, Yinhua ZhouAbstract:Organic and quantum dots (QDs) semiconductors are promising to build low-cost hybrid Tandem Solar Cells since they are both fully solution-processable, and have tunable bandgaps and absorption spectra. The challenges for high-performance organic-QDs Tandem Solar Cells are to balance the photocurrent in subCells and construct an efficient charge-recombination layer (CRL) to maximize the efficiency of the whole Tandem Cell. In this work, we report a top illuminated organic-QDs hybrid Tandem Solar Cell that employs an organic-based front subCell and a PbS QDs-based back subCell where the organic absorber complements the absorption deficiency of QDs film in the range of 650–900 nm. The hybrid Tandem Solar Cell is monolithically integrated and electrically connected with a Spiro-MeOTAD/MoO3/Ag/PEIE CRL. A conversion efficiency of 7.4% is achieved for the hybrid Tandem Cells. The Tandem Solar Cells exhibit an open-circuit voltage of 1.12 V, which is nearly the sum of the VOC of individual subCells, and a fill f...
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a two terminal perovskite perovskite Tandem Solar Cell
Journal of Materials Chemistry, 2016Co-Authors: Fangyuan Jiang, Tiefeng Liu, Bangwu Luo, Jinhui Tong, Fei Qin, Sixing Xiong, Yinhua ZhouAbstract:Building a Tandem structure is an effective strategy to enhance the photovoltaic performance of Solar Cells. In the realization of a two-terminal Tandem device, the charge recombination layer (CRL) plays an essential role. In the current study, we demonstrate the first bottom-up solution-processed two-terminal perovskite/perovskite Tandem Solar Cell via developing a novel CRL: spiro-OMeTAD/PEDOT:PSS/PEI/PCBM:PEI. This CRL is efficient to collect electrons and holes at its top and bottom surfaces, and robust enough to protect the bottom perovskite film during the top perovskite film deposition. Moreover, the CRL is prepared by orthogonal solvent processing at low temperature, which is compatible with the pre-deposited perovskite film underneath. The PEI/PCBM:PEI is specially developed for efficient electron collection in both single-junction and Tandem perovskite Solar Cells. With the optimized CRL to bridge the two CH3NH3PbI3 perovskite subCells, the Tandem Solar Cell yields an open-circuit voltage (VOC) of up to 1.89 V that is close to the sum of the two perovskite subCells.
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A two-terminal perovskite/perovskite Tandem Solar Cell
Journal of Materials Chemistry A, 2016Co-Authors: Fangyuan Jiang, Tiefeng Liu, Bangwu Luo, Jinhui Tong, Fei Qin, Sixing Xiong, Yinhua ZhouAbstract:Building a Tandem structure is an effective strategy to enhance the photovoltaic performance of Solar Cells. In the realization of a two-terminal Tandem device, the charge recombination layer (CRL) plays an essential role. In the current study, we demonstrate the first bottom-up solution-processed two-terminal perovskite/perovskite Tandem Solar Cell via developing a novel CRL: spiro-OMeTAD/PEDOT:PSS/PEI/PCBM:PEI. This CRL is efficient to collect electrons and holes at its top and bottom surfaces, and robust enough to protect the bottom perovskite film during the top perovskite film deposition. Moreover, the CRL is prepared by orthogonal solvent processing at low temperature, which is compatible with the pre-deposited perovskite film underneath. The PEI/PCBM:PEI is specially developed for efficient electron collection in both single-junction and Tandem perovskite Solar Cells. With the optimized CRL to bridge the two CH3NH3PbI3 perovskite subCells, the Tandem Solar Cell yields an open-circuit voltage (VOC) of up to 1.89 V that is close to the sum of the two perovskite subCells.
Ziruo Hong - One of the best experts on this subject based on the ideXlab platform.
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perovskite polymer monolithic hybrid Tandem Solar Cells utilizing a low temperature full solution process
Materials horizons, 2015Co-Authors: Chun-chao Chen, Gang Li, Ziruo Hong, Weihsuan Chang, Qi Chen, Huanping Zhou, Yang YangAbstract:In the current study, a monolithic integration of perovskite and polymer subCells into a Tandem structure is realized through a full solution process. The wide bandgap perovskite absorber (CH3NH3PbI3) is processed via a one-step deposition employing an additive-assisted solvent wash method. In particular, a small molecule additive, BmPyPhB, is added into the precursor solution to improve the uniformity of the initial nucleation process of the crystal by providing heterogeneous nucleation sites throughout the solution space. Next, a solvent wash method is employed to induce the fast crystallization of uniform and well-defined grains in the absorber layer as well as to reduce the requirement for thermal annealing. Thus, the highest power conversion efficiency (PCE) of 9.1% is obtained for a single junction, planar-structured CH3NH3PbI3 Solar Cell. For the polymer absorber, a new IR-sensitive block copolymer, PBSeDTEG8, with photosensitivity up to 950 nm is utilized to broaden the photoresponse of the Tandem Solar Cell. More importantly, this polymer:PCBM blend exhibits improved thermal stability, which can endure thermal annealing process while fabricating the perovskite subCell. Subsequently, this hybrid Tandem Solar Cell based on perovskite/polymer subCells achieves the highest efficiency of 10.2%.
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perovskite polymer monolithic hybrid Tandem Solar Cells utilizing a low temperature full solution process
Materials horizons, 2015Co-Authors: Chun-chao Chen, Ziruo Hong, Weihsuan Chang, Qi Chen, Huanping Zhou, Sanghoon Bae, Yang YangAbstract:In the current study, a monolithic integration of perovskite and polymer subCells into a Tandem structure is realized through a full solution process. The wide bandgap perovskite absorber (CH3NH3PbI3) is processed via a one-step deposition employing an additive-assisted solvent wash method. In particular, a small molecule additive, BmPyPhB, is added into the precursor solution to improve the uniformity of the initial nucleation process of the crystal by providing heterogeneous nucleation sites throughout the solution space. Next, a solvent wash method is employed to induce the fast crystallization of uniform and well-defined grains in the absorber layer as well as to reduce the requirement for thermal annealing. Thus, the highest power conversion efficiency (PCE) of 9.1% is obtained for a single junction, planar-structured CH3NH3PbI3 Solar Cell. For the polymer absorber, a new IR-sensitive block copolymer, PBSeDTEG8, with photosensitivity up to 950 nm is utilized to broaden the photoresponse of the Tandem Solar Cell. More importantly, this polymer:PCBM blend exhibits improved thermal stability, which can endure thermal annealing process while fabricating the perovskite subCell. Subsequently, this hybrid Tandem Solar Cell based on perovskite/polymer subCells achieves the highest efficiency of 10.2%.
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Tandem Solar Cell—Concept and Practice in Organic Solar Cells
Topics in Applied Physics, 2015Co-Authors: Ziruo Hong, Letian Dou, Yang YangAbstract:In the past decade, organic Solar Cell (OPV) technology has been intensively studied and improved significantly due to its attractive properties in manufacturability, flexibility, light weight etc. The power conversion efficiency (PCE) has been enhanced dramatically from ~2–3 to ~12 % through materials, interface and device architecture innovations such as Tandem. This chapter focuses on multi-junction or Tandem Solar Cell which is the architecture for highest Solar Cell efficiency. First, the principle of Solar photovoltaic process and the theoretical limits of Solar Cell in single and multiple junction Cells were presented. After the brief description of the realization of Tandem Cell concept in inorganic Solar Cells, we provided an overview of the development of organic Tandem Solar Cells. This includes two very distinct technologies—vacuum deposited small molecule Tandem Solar Cells, and solution processed polymer Tandem Solar Cells. The progress in active materials with different bandgap, interconnection layer, and Tandem device structure are presented.
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Tandem Solar Cell concept and practice in organic Solar Cells
2015Co-Authors: Ziruo Hong, Letian Dou, Yang YangAbstract:In the past decade, organic Solar Cell (OPV) technology has been intensively studied and improved significantly due to its attractive properties in manufacturability, flexibility, light weight etc. The power conversion efficiency (PCE) has been enhanced dramatically from ~2–3 to ~12 % through materials, interface and device architecture innovations such as Tandem. This chapter focuses on multi-junction or Tandem Solar Cell which is the architecture for highest Solar Cell efficiency. First, the principle of Solar photovoltaic process and the theoretical limits of Solar Cell in single and multiple junction Cells were presented. After the brief description of the realization of Tandem Cell concept in inorganic Solar Cells, we provided an overview of the development of organic Tandem Solar Cells. This includes two very distinct technologies—vacuum deposited small molecule Tandem Solar Cells, and solution processed polymer Tandem Solar Cells. The progress in active materials with different bandgap, interconnection layer, and Tandem device structure are presented.
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Recent trends in polymer Tandem Solar Cells research
Progress in Polymer Science, 2013Co-Authors: Jingbi You, Letian Dou, Ziruo Hong, Yang YangAbstract:Polymer Solar Cells have many intrinsic advantages, such as their light weight, flexibility, and low material and manufacturing costs. Recently, polymer Tandem Solar Cells have attracted significant attention due to their potential to achieve higher performance than single Cells. This trend article intends to provide the latest progress in polymer Tandem Solar Cell technology with a focus on active layer materials and interfacial materials for sub-Cell interconnection. Following an introduction of the structure and current status of polymer Tandem Solar Cells, this article will review polymers which have been, and could be used, for Tandem Solar Cells. Furthermore, this article will discuss the interconnecting layer consisting of p- and n-type interfacial layers, which is equally critical for polymer Tandem Solar Cells. Finally, because Tandem Solar Cell measurements are more complicated than that of single Solar Cells, this article will also address polymer Tandem Solar Cell measurement issues.
Fangyuan Jiang - One of the best experts on this subject based on the ideXlab platform.
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a two terminal perovskite perovskite Tandem Solar Cell
Journal of Materials Chemistry, 2016Co-Authors: Fangyuan Jiang, Tiefeng Liu, Bangwu Luo, Jinhui Tong, Fei Qin, Sixing Xiong, Yinhua ZhouAbstract:Building a Tandem structure is an effective strategy to enhance the photovoltaic performance of Solar Cells. In the realization of a two-terminal Tandem device, the charge recombination layer (CRL) plays an essential role. In the current study, we demonstrate the first bottom-up solution-processed two-terminal perovskite/perovskite Tandem Solar Cell via developing a novel CRL: spiro-OMeTAD/PEDOT:PSS/PEI/PCBM:PEI. This CRL is efficient to collect electrons and holes at its top and bottom surfaces, and robust enough to protect the bottom perovskite film during the top perovskite film deposition. Moreover, the CRL is prepared by orthogonal solvent processing at low temperature, which is compatible with the pre-deposited perovskite film underneath. The PEI/PCBM:PEI is specially developed for efficient electron collection in both single-junction and Tandem perovskite Solar Cells. With the optimized CRL to bridge the two CH3NH3PbI3 perovskite subCells, the Tandem Solar Cell yields an open-circuit voltage (VOC) of up to 1.89 V that is close to the sum of the two perovskite subCells.
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A two-terminal perovskite/perovskite Tandem Solar Cell
Journal of Materials Chemistry A, 2016Co-Authors: Fangyuan Jiang, Tiefeng Liu, Bangwu Luo, Jinhui Tong, Fei Qin, Sixing Xiong, Yinhua ZhouAbstract:Building a Tandem structure is an effective strategy to enhance the photovoltaic performance of Solar Cells. In the realization of a two-terminal Tandem device, the charge recombination layer (CRL) plays an essential role. In the current study, we demonstrate the first bottom-up solution-processed two-terminal perovskite/perovskite Tandem Solar Cell via developing a novel CRL: spiro-OMeTAD/PEDOT:PSS/PEI/PCBM:PEI. This CRL is efficient to collect electrons and holes at its top and bottom surfaces, and robust enough to protect the bottom perovskite film during the top perovskite film deposition. Moreover, the CRL is prepared by orthogonal solvent processing at low temperature, which is compatible with the pre-deposited perovskite film underneath. The PEI/PCBM:PEI is specially developed for efficient electron collection in both single-junction and Tandem perovskite Solar Cells. With the optimized CRL to bridge the two CH3NH3PbI3 perovskite subCells, the Tandem Solar Cell yields an open-circuit voltage (VOC) of up to 1.89 V that is close to the sum of the two perovskite subCells.
Chun-chao Chen - One of the best experts on this subject based on the ideXlab platform.
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perovskite polymer monolithic hybrid Tandem Solar Cells utilizing a low temperature full solution process
Materials horizons, 2015Co-Authors: Chun-chao Chen, Gang Li, Ziruo Hong, Weihsuan Chang, Qi Chen, Huanping Zhou, Yang YangAbstract:In the current study, a monolithic integration of perovskite and polymer subCells into a Tandem structure is realized through a full solution process. The wide bandgap perovskite absorber (CH3NH3PbI3) is processed via a one-step deposition employing an additive-assisted solvent wash method. In particular, a small molecule additive, BmPyPhB, is added into the precursor solution to improve the uniformity of the initial nucleation process of the crystal by providing heterogeneous nucleation sites throughout the solution space. Next, a solvent wash method is employed to induce the fast crystallization of uniform and well-defined grains in the absorber layer as well as to reduce the requirement for thermal annealing. Thus, the highest power conversion efficiency (PCE) of 9.1% is obtained for a single junction, planar-structured CH3NH3PbI3 Solar Cell. For the polymer absorber, a new IR-sensitive block copolymer, PBSeDTEG8, with photosensitivity up to 950 nm is utilized to broaden the photoresponse of the Tandem Solar Cell. More importantly, this polymer:PCBM blend exhibits improved thermal stability, which can endure thermal annealing process while fabricating the perovskite subCell. Subsequently, this hybrid Tandem Solar Cell based on perovskite/polymer subCells achieves the highest efficiency of 10.2%.
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perovskite polymer monolithic hybrid Tandem Solar Cells utilizing a low temperature full solution process
Materials horizons, 2015Co-Authors: Chun-chao Chen, Ziruo Hong, Weihsuan Chang, Qi Chen, Huanping Zhou, Sanghoon Bae, Yang YangAbstract:In the current study, a monolithic integration of perovskite and polymer subCells into a Tandem structure is realized through a full solution process. The wide bandgap perovskite absorber (CH3NH3PbI3) is processed via a one-step deposition employing an additive-assisted solvent wash method. In particular, a small molecule additive, BmPyPhB, is added into the precursor solution to improve the uniformity of the initial nucleation process of the crystal by providing heterogeneous nucleation sites throughout the solution space. Next, a solvent wash method is employed to induce the fast crystallization of uniform and well-defined grains in the absorber layer as well as to reduce the requirement for thermal annealing. Thus, the highest power conversion efficiency (PCE) of 9.1% is obtained for a single junction, planar-structured CH3NH3PbI3 Solar Cell. For the polymer absorber, a new IR-sensitive block copolymer, PBSeDTEG8, with photosensitivity up to 950 nm is utilized to broaden the photoresponse of the Tandem Solar Cell. More importantly, this polymer:PCBM blend exhibits improved thermal stability, which can endure thermal annealing process while fabricating the perovskite subCell. Subsequently, this hybrid Tandem Solar Cell based on perovskite/polymer subCells achieves the highest efficiency of 10.2%.
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a polymer Tandem Solar Cell with 10 6 power conversion efficiency
Nature Communications, 2013Co-Authors: Jingbi You, Letian Dou, Chun-chao Chen, Tom Moriarty, Ken Yoshimura, Keith Emery, Jing Gao, T. Kato, Kenichiro Ohya, Gang LiAbstract:Tandem Solar Cell structures combine high- and low-bandgap materials, allowing a broader spectral absorption of Solar radiation. The authors report the synthesis of a high performance low-bandgap polymer which enables fabrication of a Tandem Solar Cell with a certified power conversion efficiency of 10.6%.
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A polymer Tandem Solar Cell with 10.6% power conversion efficiency
Nature Communications, 2013Co-Authors: Jingbi You, Letian Dou, Ken Ohya, Chun-chao Chen, Tom Moriarty, Ken Yoshimura, Keith Emery, Jing Gao, T. Kato, Gang LiAbstract:An effective way to improve polymer Solar Cell efficiency is to use a Tandem structure, as a broader part of the spectrum of Solar radiation is used and the thermalization loss of photon energy is minimized. In the past, the lack of high-performance low-bandgap polymers was the major limiting factor for achieving high-performance Tandem Solar Cell. Here we report the development of a high-performance low bandgap polymer (bandgap 60% and spectral response that extends to 900 nm, with a power conversion efficiency of 7.9%. The polymer enables a solution processed Tandem Solar Cell with certified 10.6% power conversion efficiency under standard reporting conditions (25 °C, 1,000 Wm(-2), IEC 60904-3 global), which is the first certified polymer Solar Cell efficiency over 10%.
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plasmonic polymer Tandem Solar Cell
ACS Nano, 2011Co-Authors: Jun Yang, Jingbi You, Chun-chao Chen, Ziruo Hong, Wanching Hsu, Hairen Tan, Xingwang Zhang, Yang YangAbstract:We demonstrated plasmonic effects in an inverted Tandem polymer Solar Cell configuration by blending Au nanoparticles (NPs) into the interconnecting layer (ICL) that connects two subCells. Experimental results showed this plasmonic enhanced ICL improves both the top and bottom subCells' efficiency simultaneously by enhancing optical absorption. The presence of Au NPs did not cause electrical characteristics to degrade within the Tandem Cell. As a result, a 20% improvement of power conversion efficiency has been attained by the light concentration of Au NPs via plasmonic near-field enhancement. The simulated near-field distribution and experimental Raman scattering investigation support our results of plasmonic induced enhancement in Solar Cell performance. Our finding shows a great potential of incorporating the plasmonic effect with conventional device structure in achieving highly efficient polymer Solar Cells.
