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您的检索式：作者名="Wanjia Tian"
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| 1 | Phase Regulation and Defect Passivation Enabled by Phosphoryl Chloride Molecules for Efficient Quasi‑2D Perovskite Light‑Emitting Diodes显示文摘Quasi-2D perovskites have attracted tremendous interest for application as lightemission layers in light-emitting diodes(LEDs).However,the heterogeneous n phase and non-uniform distribution still severely limit the further development of quasi-2D perovskite LEDs(Pero-LEDs).Meanwhile,the increased defect density caused by the reduced dimension and grain size induces non-radiative recombination and further deteriorates the device performance.Here,we found that a series of molecules containing phosphoryl chloride functional groups have noticeable enhancement effects on the device performance of quasi-2D Pero-LEDs.Then,we studied the modification mechanism by focusing on the bis(2-oxo-3-oxazolidinyl)phosphinic chloride(BOPCl).It is concluded that the BOPCl can not only regulate the phase distribution by decreasing the crystallization rate but also remain in the grain boundaries and passivate the defects.As a result,the corresponding quasi-2D Pero-LEDs obtained a maximum external quantum efficiency(EQE_(max))of 20.82%and an average EQE(EQE_(ave))of around 20%on the optimal 50 devices,proving excellent reproducibility.Our work provides a new selection of molecular types for regulating the crystallization and passivating the defects of quasi-2D perovskite films. | Mingliang Li Yaping Zhao Jia Guo Xiangqian Qin Qin Zhang Chengbo Tian Peng Xu Yuqing Li Wanjia Tian Xiaojia Zheng Guichuan Xing Wen‑Hua Zhang Zhanhua Wei | 2023 | Nano-Micro Letters2023，15，8： | 1 |
| 2 | Monolithic bilayered In_(2)O_(3) as an efficient interfacial material for high-performance perovskite solar cells显示文摘Carrier recombination at the buried SnO_(2)/perovskite interface limits the efficiency and stability of n-i-p-structured perovskite solar cells(PSCs).Herein,we report an In_(2)O_(3)interfacial layer with the distinctive structure of the monolithic compact/nanostructured bilayer.The partial hydrolysis nature of the In^(3+)ion enables the formation of nanorods on top of the compact In_(2)O_(3)layer when spin-coating the In(NO_(3))_(3) aqueous solution.This novel interfacial layer reduces the pinholes of the SnO_(2)film and increases the contact area between the perovskite and electron transport material.Therefore,PSCs with the incorporation of the interfacial layer demonstrate enhanced electron extraction and suppressed carrier recombination.Consequently,the champion device achieves a power conversion efficiency of 23.87%with a high fill factor of 82.14%.The optimized device also shows robust operational stability,retaining over 80%of the initial power conversion efficiency after working at the maximum power point for over 500 h under continuous one-sun illumination. | Wanjia Tian Peiquan Song Yaping Zhao Lina Shen Kaikai Liu Lingfang Zheng Yujie Luo Chengbo Tian Liqiang Xie Zhanhua Wei | 2022 | Interdisciplinary Materials2022，1，4： | 1 |
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