Premium
Van Der Waals Hybrid Perovskite of High Optical Quality by Chemical Vapor Deposition
Author(s) -
Chen Zhizhong,
Wang Yiping,
Sun Xin,
Guo Yuwei,
Hu Yang,
Wertz Esther,
Wang Xi,
Gao Hanwei,
Lu TohMing,
Shi Jian
Publication year - 2017
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201700373
Subject(s) - materials science , photoluminescence , exciton , chemical vapor deposition , perovskite (structure) , van der waals force , exfoliation joint , optoelectronics , nanosecond , phonon , nanotechnology , condensed matter physics , optics , graphene , crystallography , laser , chemistry , physics , organic chemistry , molecule
2D hybrid perovksite (RNH 3 ) 2 PbX 4 materials not only serve as ideal platforms to study fundamental physics such as polariton dynamics but also show promise for optoelectronic and electro‐optic applications. However, for the preparation of high optical quality crystals, mechanical exfoliation has to be applied in the past. In this work, the vapor phase growth of single crystalline (C 4 H 9 NH 3 ) 2 PbI 4 flakes with high optical quality is reported. Individual single crystalline domains show lateral size about 5–10 µm with defined rectangular shape. Spectroscopic studies show room temperature photoluminescence full width at half maximum of 70 meV and decay lifetime of several nanoseconds, indicating comparably high quality with mechanically exfoliated counterparts. Exciton binding energy 279 ± 46 meV and electron–phonon coupling strength around 20 meV are revealed. This vacuum‐based method may provide a solution for integrating layered perovskites into optoelectronic devices and systems.