Dangling Octahedra Enable Edge States in 2D Lead Halide Perovskites

• Published in: Advanced materials (Weinheim) Vol. 34; no. 29; pp. e2201666 - n/a
• Main Authors: Qin, Yan, Li, Zhi‐Gang, Gao, Fei‐Fei, Chen, Haisheng, Li, Xiang, Xu, Bin, Li, Qian, Jiang, Xingxing, Li, Wei, Wu, Xiang, Quan, Zewei, Ye, Lei, Zhang, Yang, Lin, Zheshuai, Pedesseau, Laurent, Even, Jacky, Lu, Peixiang, Bu, Xian‐He
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.07.2022; Wiley-VCH Verlag
• Subjects: 2D lead halide perovskites; Carrier lifetime; Chemical Sciences; Crystal structure; dangling octahedra; edge states; Electron states; Electrons; electron–phonon interactions; Emissions control; Lead compounds; local symmetry; Materials science; Metal halides; Optoelectronic devices; Perovskites; Physics; Radiative recombination; Semiconductors; 2D lead halide perovskite; dangling octahedra; edge state; electron-phonon interaction; local symmetry; 2D lead halide perovskites; edge states; electron-phonon interactions
• ISSN: 0935-9648; 1521-4095; 1521-4095
• DOI: 10.1002/adma.202201666

The structural reconstruction at the crystal layer edges of 2D lead halide perovskites (LHPs) leads to unique edge states (ES), which are manifested by prolonged carrier lifetime and reduced emission energy. These special ES can effectively enhance the optoelectronic performance of devices, but thei...