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12 results on '"Fahlman, Mats"'

1. Ruddlesden–Popper Perovskites: Energetics and Energy Loss in 2D Ruddlesden–Popper Perovskite Solar Cells (Adv. Energy Mater. 23/2020)

Author

Yang, Jianming, primary, Xiong, Shaobing, additional, Song, Jingnan, additional, Wu, Hongbo, additional, Zeng, Yihan, additional, Lu, Linyang, additional, Shen, Kongchao, additional, Hao, Tianyu, additional, Ma, Zaifei, additional, Liu, Feng, additional, Duan, Chungang, additional, Fahlman, Mats, additional, and Bao, Qinye, additional

Published
2020
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2. Energetics and Energy Loss in 2D Ruddlesden–Popper Perovskite Solar Cells

Author

Yang, Jianming, primary, Xiong, Shaobing, additional, Song, Jingnan, additional, Wu, Hongbo, additional, Zeng, Yihan, additional, Lu, Linyang, additional, Shen, Kongchao, additional, Hao, Tianyu, additional, Ma, Zaifei, additional, Liu, Feng, additional, Duan, Chungang, additional, Fahlman, Mats, additional, and Bao, Qinye, additional

Published
2020
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3. Carbon‐Tailored Semimetal MoP as an Efficient Hydrogen Evolution Electrocatalyst in Both Alkaline and Acid Media

Author

Li, Guowei, primary, Sun, Yan, additional, Rao, Jiancun, additional, Wu, Jiquan, additional, Kumar, Anil, additional, Xu, Qiu Nan, additional, Fu, Chenguang, additional, Liu, Enke, additional, Blake, Graeme R., additional, Werner, Peter, additional, Shao, Baiqi, additional, Liu, Kai, additional, Parkin, Stuart, additional, Liu, Xianjie, additional, Fahlman, Mats, additional, Liou, Sz‐Chian, additional, Auffermann, Gudrun, additional, Zhang, Jian, additional, Felser, Claudia, additional, and Feng, Xinliang, additional

Published
2018
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4. Ternary Organic Solar Cells with Minimum Voltage Losses

Author

Wang, Chuanfei, primary, Zhang, Wei, additional, Meng, Xiangyi, additional, Bergqvist, Jonas, additional, Liu, Xianjie, additional, Genene, Zewdneh, additional, Xu, Xiaofeng, additional, Yartsev, Arkady, additional, Inganäs, Olle, additional, Ma, Wei, additional, Wang, Ergang, additional, and Fahlman, Mats, additional

Published
2017
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5. Organic Photovoltaics: Low Band Gap Polymer Solar Cells With Minimal Voltage Losses (Adv. Energy Mater. 18/2016)

Author

Wang, Chuanfei, primary, Xu, Xiaofeng, additional, Zhang, Wei, additional, Bergqvist, Jonas, additional, Xia, Yuxin, additional, Meng, Xiangyi, additional, Bini, Kim, additional, Ma, Wei, additional, Yartsev, Arkady, additional, Vandewal, Koen, additional, Andersson, Mats R., additional, Inganäs, Olle, additional, Fahlman, Mats, additional, and Wang, Ergang, additional

Published
2016
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6. Interplay of Optical, Morphological, and Electronic Effects of ZnO Optical Spacers in Highly Efficient Polymer Solar Cells

Author

Dkhil, Sadok Ben, primary, Duché, David, additional, Gaceur, Meriem, additional, Thakur, Anil K., additional, Aboura, Fatima Bencheikh, additional, Escoubas, Ludovic, additional, Simon, Jean-Jacques, additional, Guerrero, Antonio, additional, Bisquert, Juan, additional, Garcia-Belmonte, Germà, additional, Bao, Qinye, additional, Fahlman, Mats, additional, Videlot-Ackermann, Christine, additional, Margeat, Olivier, additional, and Ackermann, Jörg, additional

Published
2014
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8. Low Band Gap Polymer Solar Cells With Minimal Voltage Losses.

Author

Wang, Chuanfei, Xu, Xiaofeng, Zhang, Wei, Bergqvist, Jonas, Xia, Yuxin, Meng, Xiangyi, Bini, Kim, Ma, Wei, Yartsev, Arkady, Vandewal, Koen, Andersson, Mats R., Inganäs, Olle, Fahlman, Mats, and Wang, Ergang

Subjects
SOLAR cells, BAND gaps, OPEN-circuit voltage, ELECTRON donor-acceptor complexes, THIOPHENE derivatives, ABSORPTION spectra
Abstract

One of the factors limiting the performance of organic solar cells (OSCs) is their large energy losses ( Eloss) in the conversion from photons to electrons, typically believed to be around 0.6 eV and often higher than those of inorganic solar cells. In this work, a novel low band gap polymer PIDTT-TID with a optical gap of 1.49 eV is synthesized and used as the donor combined with PC71BM in solar cells. These solar cells attain a good power conversion efficiency of 6.7% with a high open-circuit voltage of 1.0 V, leading to the Eloss as low as 0.49 eV. A systematic study indicates that the driving force in this donor and acceptor system is sufficient for charge generation with the low Eloss. This work pushes the minimal Eloss of OSCs down to 0.49 eV, approaching the values of some inorganic and hybrid solar cells. It indicates the potential for further enhancement of the performance of OSCs by improving their Voc since the Eloss can be minimized. [ABSTRACT FROM AUTHOR]

Published
2016
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11. Oxygen- and Water-Based Degradation in [6,6]-Phenyl-C61-Butyric Acid Methyl Ester (PCBM) Films.

Author

Bao, Qinye, Liu, Xianjie, Braun, Slawomir, and Fahlman, Mats

Subjects
BUTYRIC acid, METHYL formate, FULLERENES, ELECTRON traps, OXYGEN, WATER, CHEMICAL decomposition
Abstract

Effects of in situ oxygen/water exposure on the energetics of [6,6]‐phenyl‐C61‐butyric acid methyl ester (PCBM) films are presented. For oxygen exposure, the work function is downshifted by ≈0.15 eV compared to the ideal integer charge transfer (ICT) curve for pristine PCBM, which is incompatible with significant introduction of electron trap states or p‐doping. Water induces the highest occupied molecular orbital (HOMO) structure to undergo strong, irreversible modifications accompanied by a chemical interaction with PCBM. [ABSTRACT FROM AUTHOR]

Published
2014
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12. Low Band Gap Polymer Solar Cells With Minimal Voltage Losses

Author

Xiaofeng Xu, Wei Zhang, Wei Ma, Mats Fahlman, Xiangyi Meng, Yuxin Xia, Koen Vandewal, Ergang Wang, Olle Inganäs, Arkady Yartsev, Kim Bini, Jonas Bergqvist, Mats Andersson, Chuanfei Wang, Wang, Chuanfei, Xu, Xiaofeng, Zhang, Wei, Bergqvist, Jonas, Xia, Yuxin, Meng, Xiangyi, Bini, Kim, Ma, Wei, Yartsev, Arkady, Vandewal, Koen, Andersson, Mats R, Inganäs, Olle, Fahlman, Mats, and Wang, Ergang

Subjects
energy dissipation, organic polymers, Materials science, Organic solar cell, Band gap, inorganic solar cells, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Polymer solar cell, power conversion efficiencies, low band gap, conjugated polymers, polymer solar cellscharge generation, General Materials Science, Theory of solar cells, donor and acceptor, Renewable Energy, Sustainability and the Environment, business.industry, Energy conversion efficiency, organic solar cells, low bandgap polymers, Hybrid solar cell, open circuit voltage, 021001 nanoscience & nanotechnology, Acceptor, hybrid solar cells, 0104 chemical sciences, Multiple exciton generation, energy gap, Optoelectronics, organic photovoltaics, 0210 nano-technology, business
Abstract

One of the factors limiting the performance of organic solar cells (OSCs) is their large energy losses (E loss) in the conversion from photons to electrons, typically believed to be around 0.6 eV and often higher than those of inorganic solar cells. In this work, a novel low band gap polymer PIDTT-TID with a optical gap of 1.49 eV is synthesized and used as the donor combined with PC71BM in solar cells. These solar cells attain a good power conversion efficiency of 6.7% with a high open-circuit voltage of 1.0 V, leading to the E loss as low as 0.49 eV. A systematic study indicates that the driving force in this donor and acceptor system is sufficient for charge generation with the low E loss. This work pushes the minimal E loss of OSCs down to 0.49 eV, approaching the values of some inorganic and hybrid solar cells. It indicates the potential for further enhancement of the performance of OSCs by improving their V oc since the E loss can be minimized. Refereed/Peer-reviewed

Published
2016

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