The Experts below are selected from a list of 114756 Experts worldwide ranked by ideXlab platform
Longshi Rao - One of the best experts on this subject based on the ideXlab platform.
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improvement in luminous efficacy and thermal performance using quantum dots spherical shell for white light emitting diodes
Nanomaterials, 2018Co-Authors: Songmao Chen, Caiman Yan, Yong Tang, Xinrui Ding, Longshi RaoAbstract:White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with Planar Structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell Structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional Planar Structure, the luminous efficacy of the QDs spherical shell Structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a Planar Structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell Structure demonstrates superior performance of QDs films for WLEDs applications.
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Improvement in Luminous Efficacy and Thermal Performance Using Quantum Dots Spherical Shell for White Light Emitting Diodes
MDPI AG, 2018Co-Authors: Songmao Chen, Caiman Yan, Yong Tang, Xinrui Ding, Longshi RaoAbstract:White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with Planar Structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell Structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional Planar Structure, the luminous efficacy of the QDs spherical shell Structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a Planar Structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell Structure demonstrates superior performance of QDs films for WLEDs applications
Songmao Chen - One of the best experts on this subject based on the ideXlab platform.
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improvement in luminous efficacy and thermal performance using quantum dots spherical shell for white light emitting diodes
Nanomaterials, 2018Co-Authors: Songmao Chen, Caiman Yan, Yong Tang, Xinrui Ding, Longshi RaoAbstract:White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with Planar Structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell Structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional Planar Structure, the luminous efficacy of the QDs spherical shell Structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a Planar Structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell Structure demonstrates superior performance of QDs films for WLEDs applications.
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Improvement in Luminous Efficacy and Thermal Performance Using Quantum Dots Spherical Shell for White Light Emitting Diodes
MDPI AG, 2018Co-Authors: Songmao Chen, Caiman Yan, Yong Tang, Xinrui Ding, Longshi RaoAbstract:White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with Planar Structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell Structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional Planar Structure, the luminous efficacy of the QDs spherical shell Structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a Planar Structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell Structure demonstrates superior performance of QDs films for WLEDs applications
Valerie J. Paul - One of the best experts on this subject based on the ideXlab platform.
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the isolation and Structure elucidation of tasiamide b a 4 amino 3 hydroxy 5 phenylpentanoic acid containing peptide from the marine cyanobacterium symploca sp
Journal of Natural Products, 2003Co-Authors: Philip G. Williams, Wesley Y. Yoshida, Richard E. Moore, Valerie J. PaulAbstract:A new cytotoxic peptide, which displayed an IC50 value of 0.8 μM against KB cells, has been isolated from the marine cyanobacterium Symploca sp. The Planar Structure of tasiamide B (1), deduced by 2D NMR experiments, contains the unusual amino acid-derived residue 4-amino-3-hydroxy-5-phenylpentanoic acid (Ahppa). The configuration of 1 was deduced by HPLC analysis of degradation products.
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tasiamide a cytotoxic peptide from the marine cyanobacterium symploca sp
Journal of Natural Products, 2002Co-Authors: Philip G. Williams, Wesley Y. Yoshida, Richard E. Moore, Valerie J. PaulAbstract:The acyclic peptide tasiamide (1) has been isolated from the marine cyanobacterium Symploca sp. The Planar Structure and absolute stereochemistry of the peptide were deduced by 2D NMR techniques and chiral HPLC. Tasiamide (1) was cytotoxic against KB and LoVo cells with IC50 values of 0.48 and 3.47 μg/mL, respectively.
Yang Yang - One of the best experts on this subject based on the ideXlab platform.
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Inverted Planar Structure of Perovskite Solar Cells
Organic-Inorganic Halide Perovskite Photovoltaics, 2016Co-Authors: Lei Meng, Ziruo Hong, Gang Li, Yang YangAbstract:Recently, another emerging Structure, referred to as an “inverted” Planar device Structure (i.e., p-i-n), uses p-type and n-type materials as bottom and top charge transport layers, respectively. This Structure derived from organic solar cells, and the charge transport layers used in organic photovoltaics were successfully transferred into perovskite solar cells. The p-i-n Structure of perovskite solar cells have shown efficiencies as high as 18 %, lower temperature processing, flexibility, and furthermore, negligible J-V hysteresis effects. In this chapter, we will provide a comprehensive comparison of the mesoporous and Planar Structures, and also the regular and inverted of Planar Structures. Later, we will focus the discussion on the development of the inverted Planar Structure of perovskite solar cells, including film growth, band alignment, stability, and hysteresis. Future development and possible solutions to the remaining challenges facing the commercialization of perovskite solar cells are discussed.
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recent advances in the inverted Planar Structure of perovskite solar cells
Accounts of Chemical Research, 2016Co-Authors: Lei Meng, Yang YangAbstract:ConspectusInorganic–organic hybrid perovskite solar cells research could be traced back to 2009, and initially showed 3.8% efficiency. After 6 years of efforts, the efficiency has been pushed to 20.1%. The pace of development was much faster than that of any type of solar cell technology. In addition to high efficiency, the device fabrication is a low-cost solution process. Due to these advantages, a large number of scientists have been immersed into this promising area. In the past 6 years, much of the research on perovskite solar cells has been focused on Planar and mesoporous device Structures employing an n-type TiO2 layer as the bottom electron transport layer. These architectures have achieved champion device efficiencies. However, they still possess unwanted features. Mesoporous Structures require a high temperature (>450 °C) sintering process for the TiO2 scaffold, which will increase the cost and also not be compatible with flexible substrates. While the Planar Structures based on TiO2 (regular s...
Xinrui Ding - One of the best experts on this subject based on the ideXlab platform.
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improvement in luminous efficacy and thermal performance using quantum dots spherical shell for white light emitting diodes
Nanomaterials, 2018Co-Authors: Songmao Chen, Caiman Yan, Yong Tang, Xinrui Ding, Longshi RaoAbstract:White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with Planar Structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell Structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional Planar Structure, the luminous efficacy of the QDs spherical shell Structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a Planar Structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell Structure demonstrates superior performance of QDs films for WLEDs applications.
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Improvement in Luminous Efficacy and Thermal Performance Using Quantum Dots Spherical Shell for White Light Emitting Diodes
MDPI AG, 2018Co-Authors: Songmao Chen, Caiman Yan, Yong Tang, Xinrui Ding, Longshi RaoAbstract:White light-emitting diodes (WLEDs) based on quantum dots (QDs) are gaining increasing attention due to their excellent color quality. QDs films with Planar Structure are universally applied in WLEDs for color conversion, while they still face great challenges in high light extraction and thermal stability. In this study, a QDs film with a spherical shell Structure was proposed to improve the optical and thermal performance for WLEDs. Compared with the conventional Planar Structure, the luminous efficacy of the QDs spherical shell Structure is improved by 12.9% due to the reduced total reflection effect, and the angular-dependent correlated color temperature deviation is decreased from 2642 to 283 K. Moreover, the highest temperature of the WLED using a QDs spherical shell is 4.8 °C lower than that of the conventional WLED with a Planar Structure, which is mainly attributed to larger heat dissipation area and separated heat source. Consequently, this QDs spherical shell Structure demonstrates superior performance of QDs films for WLEDs applications
