Zobrazeno 1 - 10 of 114 pro vyhledávání: '"Mengjin Yang"'
1
Akademický článek
Multifunctional anchoring of O‐ligands for high‐performance and stable inverted perovskite solar cells
Autor: Lisha Xie, Xuhong Zhao, Jianwei Wang, Jun Li, Chang Liu, Shurong Wang, Qinye Bao, Mengjin Yang, Xiaobin Niu, Feng Hao, Ziyi Ge
Publikováno v: InfoMat, Vol 5, Iss 2, Pp n/a-n/a (2023)
Abstract Functional additives have recently been regarded as emerging candidates to improve the performance and stability of perovskite solar cells (PSCs). Herein, nicotinamide (N), 2‐chloronicotinamide (2Cl), and 6‐chloronicotinamide (6Cl) were
Externí odkaz: https://doaj.org/article/56a6e1e0ff20499990c5562b269369a5
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2
Akademický článek
Impact of grain boundaries on efficiency and stability of organic-inorganic trihalide perovskites
Autor: Zhaodong Chu, Mengjin Yang, Philip Schulz, Di Wu, Xin Ma, Edward Seifert, Liuyang Sun, Xiaoqin Li, Kai Zhu, Keji Lai
Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
Probing the nanoscale photoconductivity of methylammonium lead triiodide is important for understanding the microstructures of the solar cell devices, but scanning probe methods suffer from sample degradation. Here Chu et al. solve the problem with n
Externí odkaz: https://doaj.org/article/3bf6b2b0e7e144cbb9ee44b4c1e564b0
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3
Akademický článek
Large polarization-dependent exciton optical Stark effect in lead iodide perovskites
Autor: Ye Yang, Mengjin Yang, Kai Zhu, Justin C. Johnson, Joseph J. Berry, Jao van de Lagemaat, Matthew C. Beard
Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-5 (2016)
The band gap of bulk semiconductors widens when excited by sub-bandgap wavelengths at low temperature—it’s the optical Stark effect. Here, the authors measure a room temperature optical Stark effect in lead halide perovskite films, due to their w
Externí odkaz: https://doaj.org/article/c82eb826e89a44049f5b79164a2bd6ef
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4
Akademický článek
Facile fabrication of large-grain CH3NH3PbI3−xBrx films for high-efficiency solar cells via CH3NH3Br-selective Ostwald ripening
Autor: Mengjin Yang, Taiyang Zhang, Philip Schulz, Zhen Li, Ge Li, Dong Hoe Kim, Nanjie Guo, Joseph J. Berry, Kai Zhu, Yixin Zhao
Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-9 (2016)
Organolead halide perovskite optoelectronic devices require high material quality. Here, Yang et al. show that methylammonium lead iodide films can undergo Ostwald ripening and become mixed-halide films using methylammonium bromide treatment. This pr
Externí odkaz: https://doaj.org/article/cfe8a5bc285f4855851148249ed30635
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6
Akademický článek
Multiple-Stage Structure Transformation of Organic-Inorganic Hybrid Perovskite CH_{3}NH_{3}PbI_{3}
Autor: Qiong Chen, Henan Liu, Hui-Seon Kim, Yucheng Liu, Mengjin Yang, Naili Yue, Gang Ren, Kai Zhu, Shengzhong Liu, Nam-Gyu Park, Yong Zhang
Publikováno v: Physical Review X, Vol 6, Iss 3, p 031042 (2016)
By performing spatially resolved Raman and photoluminescence spectroscopy with varying excitation wavelength, density, and data acquisition parameters, we achieve a unified understanding towards the spectroscopy signatures of the organic-inorganic hy
Externí odkaz: https://doaj.org/article/c4d906d87c9d4b5a8f4abafdfa2ce34b
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