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Giant Electric Bias‐Induced Tunability of Photoluminescence and Photoresistance in Hybrid Perovskite Films on Ferroelectric Substrates
Author(s) -
Ren Lixia,
Wang Min,
Guan Xinwei,
Wang Shuanhu,
Yan Hong,
Zhang Zhan,
Yuan Guoliang,
Wu Tom,
Jin Kexin
Publication year - 2019
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.201901092
Subject(s) - materials science , ferroelectricity , photoluminescence , perovskite (structure) , piezoelectricity , optoelectronics , photoelectric effect , biasing , converse , nanotechnology , dielectric , voltage , electrical engineering , chemical engineering , composite material , geometry , mathematics , engineering
Hybrid organic–inorganic perovskites represent the frontier of optoelectronic research due to their outstanding physical properties and remarkable photovoltaic performance. Despite the success of perovskite‐based photovoltaic devices, the investigation on tuning photoelectric properties of perovskites is still scarce. Here, giant modulations of photoluminescence (up to 91.3%) and photoresistance (up to 70.8%) are achieved in CH 3 NH 3 PbI 3 films by applying an electric bias on single‐crystal ferroelectric Pb(Mg 1/3 Nb 2/3 ) 0.7 Ti 0.3 O 3 substrates. The results indicate that the electrostatic (converse piezoelectric) effect is predominant in thinner (thicker) film, resulting in rich optical and electronic tuning phenomena. This work integrates hybrid perovskites with piezoelectric platforms, paving the way toward solution‐processed piezophototronic and bias‐tunable optoelectronics.