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题名: Energy-Down-Shift CsPbCl3:Mn Quantum Dots for Boosting the Efficiency and Stability of Perovskite Solar Cells
作者: Wang, Qian1, 2, 3;  Zhang, Xisheng1, 2, 3, 6;  Jin, Zhiwen1, 2, 3;  Zhang, Jingru1, 2, 3;  Gao, Zhenfei1, 2, 3;  Li, Yongfang5;  Liu, Shengzhong Frank1, 2, 3, 4
刊名: ACS ENERGY LETTERS
发表日期: 2017-07-01
DOI: 10.1021/acsenergylett.7b00375
卷: 2, 期:7, 页:1479-1486
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Parasitic absorption by window layer, electrode layer, and interface layer in the near ultraviolet (UV) region is no longer negligible for high-efficiency perovskite solar cells. On the other hand, UV-induced degradation is also a big component of cell instability. Herein, CsPbCl3:Mn-based quantum dots (QDs) are synthesized and applied onto the front side of the perovskite solar cells as the energy-down-shift (EDS) layer. It is found that with very high quantum yield (similar to 60%) and larger Stokes shift (>200 nm), the CsPbCl3:Mn QDs effectively convert the normally wasted energy in the UV region (300-400 nm) into usable visible light at 590 nm for enhanced power conversion efficiency (PCE). Meanwhile, conversion of the UV rays eliminated a significant loss mechanism that deteriorates perovskite stability. As a result, external quantum efficiency in the UV region is significantly increased, leading to an increased short-circuit current (3.77%) and PCE (3.34%). Furthermore, the stability of perovskite solar cells has also been improved from 85% to 97% of their initial efficiency after exposure in the UV region with 5 mW/cm(2) intensity by 100 h. In parallel, the organic and silicon solar cells coated by EDS QDs also both confirm the above conclusion with PCE enhancements of 3.21% and 2.98%, respectively. These results suggest that the CsPbCl3:Mn QDs play a significant role in improving the efficiency and stability of photovoltaic devices. To our knowledge, this is the first report about CsPbCl3:Mn QD-assisted perovskite solar cells.
关键词[WOS]: HIGHLY EFFICIENT ;  ANION-EXCHANGE ;  NANOCRYSTALS ;  LIGHT ;  OXIDE ;  MN2+ ;  PERFORMANCE ;  CSPBX3 ;  LAYERS ;  ELECTRODES
语种: 英语
WOS记录号: WOS:000405979900001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152037
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Shaanxi Normal Univ, Natl Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710119, Shaanxi, Peoples R China
2.Shaanxi Normal Univ, Shaanxi Key Lab Adv Energy Devices, Xian 710119, Shaanxi, Peoples R China
3.Shaanxi Normal Univ, Shaanxi Engn Lab Adv Energy Technol, Sch Mat Sci & Engn, Xian 710119, Shaanxi, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, iChEM, Dalian 116023, Peoples R China
5.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
6.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng 044000, Peoples R China

Recommended Citation:
Wang, Qian,Zhang, Xisheng,Jin, Zhiwen,et al. Energy-Down-Shift CsPbCl3:Mn Quantum Dots for Boosting the Efficiency and Stability of Perovskite Solar Cells[J]. ACS ENERGY LETTERS,2017,2(7):1479-1486.
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