Steric Impediment of Ion Migration Contributes to Improved Operational Stability of Perovskite Solar Cells.
Shaun Tan,Ilhan Yavuz,Nicholas De Marco,Tianyi Huang,Sung-Joon Lee,Christopher S. Choi,Minhuan Wang,Selbi Nuryyeva,Rui Wang,Yepin Zhao,Hao Cheng Wang,Tae Hee Han,Tae Hee Han,Bruce Dunn,Yu Huang,Jin-Wook Lee,Jin-Wook Lee,Yang Yang +17 more
TLDR
It is observed that the size mismatch of the mixed "A" site composition films and devices leads to a steric effect to impede the migration pathways of ions to increase the activation energy of ion migration, which is demonstrated through multiple theoretical and experimental evidence.Abstract:
The operational instability of perovskite solar cells (PSCs) is known to mainly originate from the migration of ionic species (or charged defects) under a potential gradient. Compositional engineering of the "A" site cation of the ABX3 perovskite structure has been shown to be an effective route to improve the stability of PSCs. Here, the effect of size-mismatch-induced lattice distortions on the ion migration energetics and operational stability of PSCs is investigated. It is observed that the size mismatch of the mixed "A" site composition films and devices leads to a steric effect to impede the migration pathways of ions to increase the activation energy of ion migration, which is demonstrated through multiple theoretical and experimental evidence. Consequently, the mixed composition devices exhibit significantly improved thermal stability under continuous heating at 85 °C and operational stability under continuous 1 sun illumination, with an extrapolated lifetime of 2011 h, compared to the 222 h of the reference device.read more
Citations
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Synergistic Effects of Multifunctional Lanthanides Doped CsPbBrCl2 Quantum Dots for Efficient and Stable MAPbI3 Perovskite Solar Cells
Xinmeng Zhuang,Rui Sun,Donglei Zhou,Shuainan Liu,Yanjie Wu,Zhichong Shi,Yuhong Zhang,Bin Liu,Cong Chen,Dali Liu,Hong Ye Song +10 more
TL;DR: In this paper , four kinds of Ln3+ doped CsPbBrCl2 PQDs (Ln3+, = Yb3+, Ce3+, Eu3+, Sm3+) are firstly introduced into PSCs, which displays the synergistic effect of composition engineering and defect engineering.
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Sequential Deposition of Donor and Acceptor Provides High-Performance Semitransparent Organic Photovoltaics Having a Pseudo p–i–n Active Layer Structure
Hao Cheng Wang,Pei Cheng,Shaun Tan,Chung Hao Chen,Bin Chang,Cheng Si Tsao,Li Yin Chen,Chung An Hsieh,Yu Che Lin,Hao Wen Cheng,Yang Yang,Kung-Hwa Wei +11 more
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Surface Reconstruction for Stable Monolithic All-Inorganic Perovskite/Organic Tandem Solar Cells with over 21% Efficiency
Weijie Chen,Dong Li,Xu Chen,Haiyang Chen,Shuo Liu,Haidi Yang,Xinqi Li,Yunxiu Shen,Xuemei Ou,Yang Yang,Lin Jiang,Yaowen Li,Yongfang Li,Yongfang Li +13 more
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Defects and Stability of Perovskite Solar Cell: A Critical Analysis
Leiping Duan,Ashraf Uddin +1 more
TL;DR: In this paper , metal halide perovskite solar cells (PSCs) continue to improve their power conversion efficiency by over 25.5% which is at the same level as silicon solar cells.
Journal ArticleDOI
Stabilizing electroluminescence color of blue perovskite LEDs via amine group doping
TL;DR: In this paper, a hydrogen-bonded amine-group doping strategy was used to achieve color-stable blue mixed halide perovskite light-emitting diodes (PeLEDs).
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