The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
Gerrit Boschloo - One of the best experts on this subject based on the ideXlab platform.
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Correction: Ultrafast dye regeneration in a core–shell NiO–dye–TiO2 Mesoporous Film
Physical chemistry chemical physics : PCCP, 2018Co-Authors: Lei Tian, Jens Föhlinger, Palas Baran Pati, Zhibin Zhang, Junzhong Lin, Wenxing Yang, Malin B. Johansson, Tomas Kubart, Junliang Sun, Gerrit BoschlooAbstract:Correction for 'Ultrafast dye regeneration in a core-shell NiO-dye-TiO2 Mesoporous Film' by Lei Tian et al., Phys. Chem. Chem. Phys., 2018, 20, 36-40.
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Ultrafast dye regeneration in a core–shell NiO–dye–TiO2 Mesoporous Film
Physical chemistry chemical physics : PCCP, 2017Co-Authors: Lei Tian, Jens Föhlinger, Palas Baran Pati, Zhibin Zhang, Junzhong Lin, Wenxing Yang, Malin B. Johansson, Tomas Kubart, Junliang Sun, Gerrit BoschlooAbstract:In this study, a core–shell NiO–dye–TiO2 Mesoporous Film was fabricated for the first time, utilizing atomic layer deposition technique and a newly designed triphenylamine dye. The structure of the Film was confirmed by SEM, TEM, and EDX. Excitation of the dye led to efficient and fast charge separation, by hole injection into NiO, followed by an unprecedentedly fast dye regeneration (t1/2 ≤ 500 fs) by electron transfer to TiO2. The resulting charge separated state showed a pronounced transient absorption spectrum caused by the Stark effect, and no significant decay was found within 1.9 ns. This indicates that charge recombination between NiO and TiO2 is much slower than that between the NiO and the reduced dye in the absence of the TiO2 layer (t1/2 ≈ 100 ps).
Jong Shik Shin - One of the best experts on this subject based on the ideXlab platform.
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highly efficient i2 free solid state dye sensitized solar cells fabricated with polymerized ionic liquid and graft copolymer directed Mesoporous Film
Electrochemistry Communications, 2011Co-Authors: Jong Shik ShinAbstract:Abstract A polymerized ionic liquid of poly((1-(4-ethenylphenyl)methyl)-3-butyl-imidazolium iodide) was synthesized and employed as a solid electrolyte for I 2 -free solid-state dye-sensitized solar cells. The electrode/electrolyte interfaces were significantly improved using a graft copolymer-directed, organized Mesoporous TiO 2 thin Film. The conversion efficiency reached 5.93% at 100 mW/cm 2 , one of the highest observed values, due to decreased interfacial resistance and enhanced electron lifetime.
Lei Tian - One of the best experts on this subject based on the ideXlab platform.
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Correction: Ultrafast dye regeneration in a core–shell NiO–dye–TiO2 Mesoporous Film
Physical chemistry chemical physics : PCCP, 2018Co-Authors: Lei Tian, Jens Föhlinger, Palas Baran Pati, Zhibin Zhang, Junzhong Lin, Wenxing Yang, Malin B. Johansson, Tomas Kubart, Junliang Sun, Gerrit BoschlooAbstract:Correction for 'Ultrafast dye regeneration in a core-shell NiO-dye-TiO2 Mesoporous Film' by Lei Tian et al., Phys. Chem. Chem. Phys., 2018, 20, 36-40.
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Ultrafast dye regeneration in a core–shell NiO–dye–TiO2 Mesoporous Film
Physical chemistry chemical physics : PCCP, 2017Co-Authors: Lei Tian, Jens Föhlinger, Palas Baran Pati, Zhibin Zhang, Junzhong Lin, Wenxing Yang, Malin B. Johansson, Tomas Kubart, Junliang Sun, Gerrit BoschlooAbstract:In this study, a core–shell NiO–dye–TiO2 Mesoporous Film was fabricated for the first time, utilizing atomic layer deposition technique and a newly designed triphenylamine dye. The structure of the Film was confirmed by SEM, TEM, and EDX. Excitation of the dye led to efficient and fast charge separation, by hole injection into NiO, followed by an unprecedentedly fast dye regeneration (t1/2 ≤ 500 fs) by electron transfer to TiO2. The resulting charge separated state showed a pronounced transient absorption spectrum caused by the Stark effect, and no significant decay was found within 1.9 ns. This indicates that charge recombination between NiO and TiO2 is much slower than that between the NiO and the reduced dye in the absence of the TiO2 layer (t1/2 ≈ 100 ps).
Kristofer Fredin - One of the best experts on this subject based on the ideXlab platform.
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Solid state dye-sensitized solar cells prepared by infiltrating a molten hole conductor into a Mesoporous Film at a temperature below 150 °C
Synthetic Metals, 2011Co-Authors: Kristofer Fredin, Erik M. J. Johansson, Maria Hahlin, Rebecka Schölin, Stefan Plogmaker, Erik Gabrielsson, Licheng Sun, Håkan RensmoAbstract:Infiltration of a molten hole conductor in a Mesoporous Film at an elevated temperature exhibits good wetting performance and the procedure is therefore suitable as part of the preparation method f ...
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Brownian dynamics simulations of electrons and ions in Mesoporous Films
Solar Energy Materials and Solar Cells, 2005Co-Authors: Kristofer Fredin, Jarl Nissfolk, Anders HagfeldtAbstract:This paper presents a simulation model to study charge transport processes in Mesoporous Films for dye-sensitized solar cells. By simulating electron and ion transport by Brownian dynamics in these Films, we achieve a direct relation between the grain connectivity and the effective diffusion coefficients. By comparing the macroscopic properties of a simple cubic and a diamond structured unit cell, we conclude that the latter better resembles the properties of the Mesoporous oxide Films in comparison with experimental results. The model has been used to optimize the size of the contact area between the interconnected particles in the Mesoporous Film with respect to the photocurrent.
Håkan Rensmo - One of the best experts on this subject based on the ideXlab platform.
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Solid state dye-sensitized solar cells prepared by infiltrating a molten hole conductor into a Mesoporous Film at a temperature below 150 °C
Synthetic Metals, 2011Co-Authors: Kristofer Fredin, Erik M. J. Johansson, Maria Hahlin, Rebecka Schölin, Stefan Plogmaker, Erik Gabrielsson, Licheng Sun, Håkan RensmoAbstract:Infiltration of a molten hole conductor in a Mesoporous Film at an elevated temperature exhibits good wetting performance and the procedure is therefore suitable as part of the preparation method f ...