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5 results on '"Yaqing, Feng"'

3. In Situ Graded Passivation via Porphyrin Derivative with Enhanced Photovoltage and Fill Factor in Perovskite Solar Cells

Author

Kuo Su, Wentao Chen, Yuqiong Huang, Guang Yang, Keith Gregory Brooks, Bao Zhang, Yaqing Feng, Mohammad Khaja Nazeeruddin, and Yi Zhang

Subjects
high efficiency, graded passivation, defect passivation, porphyrin derivative, high stability, Energy Engineering and Power Technology, stability, Electrical and Electronic Engineering, perovskite solar cells, Atomic and Molecular Physics, and Optics, efficient, Electronic, Optical and Magnetic Materials
Abstract

While perovskite solar cells (PSCs) have recently experienced a rapid rise in power conversion efficiency (PCE), the prevailing PSCs still contain nondesirable defects in the interior and interface of the perovskite layer, which limits further enhancement in PCE and device stability. Herein, a new D-pi-A-type zinc pyridine porphyrin derivative (ZnPP) is synthesized and used as a passivation molecular via the antisolvent process for modifying the typical perovskite bulk thin film, leading to a new type of PSC with a graded passivation ofthe perovskite layer. Impressively, it is found that ZnPP treatment significantly improves the quality of perovskite films and reduces charge transport losses through passivating the uncoordinated Pb2+ cations, yielding devices with a high efficiency of 21.08% with fill factor (FF) of 82.91% and demonstrating the promise of integration of perovskite bulk thin films with tailor molecular via graded modification.

Published
2022

4. High-Mobility Hydrophobic Conjugated Polymer as Effective Interlayer for Air-Stable Efficient Perovskite Solar Cells (Solar RRL 1∕2019)

Author

Jingyuan Ma, Ding-Jiang Xue, Gui Yu, Dong Gao, Qian-Qing Ge, Bao Zhang, Jin-Song Hu, Xiao-Xin Gao, Jie Ding, Weifeng Zhang, Yaqing Feng, and Qiwei Han

Subjects
chemistry.chemical_classification, Materials science, chemistry, Chemical engineering, Energy Engineering and Power Technology, Polymer, Electrical and Electronic Engineering, Conjugated system, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Perovskite (structure)
Published
2019

5. High-Mobility Hydrophobic Conjugated Polymer as Effective Interlayer for Air-Stable Efficient Perovskite Solar Cells

Author

Jingyuan Ma, Jin-Song Hu, Dong Gao, Weifeng Zhang, Gui Yu, Bao Zhang, Jie Ding, Ding-Jiang Xue, Qian-Qing Ge, Yaqing Feng, Qiwei Han, and Xiao-Xin Gao

Subjects
chemistry.chemical_classification, Materials science, Energy Engineering and Power Technology, 02 engineering and technology, Polymer, Conjugated system, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, chemistry, Chemical engineering, Electrical and Electronic Engineering, 0210 nano-technology, Perovskite (structure)
Published
2018

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