Giant Electric Bias‐Induced Tunability of Photoluminescence and Photoresistance in Hybrid Perovskite Films on Ferroelectric Substrates. Issue 21 (16th August 2019)

• Record Type: Journal Article
• Authors: Ren, Lixia; Wang, Min; Guan, Xinwei; Wang, Shuanhu; Yan, Hong; Zhang, Zhan; Yuan, Guoliang; Wu, Tom; Jin, Kexin
• Is Part Of: Advanced optical materials. Volume 7:Issue 21(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-08-16
• Subjects: hybrid perovskite -- photoluminescence -- photoresistance -- piezoelectric -- PMN‐PT; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.201901092
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: 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 CH3 NH3 PbI3 films by applying an electric bias on single‐crystal ferroelectric Pb(Mg1/3 Nb2/3 )0.7 Ti0.3 O3 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. Abstract : Giant electric bias‐induced tunability of photoluminescence and photoresistance in hybrid perovskite films on ferroelectric substrates is achieved in CH3 NH3 PbI3 /Pb(Mg1/3 Nb2/3 )0.7 Ti0.3 O3 structure. The thicker (thinner) perovskite film is affected by the converse piezoelectric (the electrostatic effect) of piezoelectric platforms. This work paves the way toward solution‐processable optoelectronics with high electric‐bias tunability.