TY - JOUR
T1 - Revealing photovoltaic behavior in 2D hybrid perovskite ferroelectric single-crystalline microwire arrays for self-powered photodetectors
AU - Ding, Ran
AU - Lyu, Yongxin
AU - Zhao, Yuqian
AU - Wu, Zehan
AU - Guo, Feng
AU - Io, Weng Fu
AU - Pang, Sin Yi
AU - Mao, Jianfeng
AU - Wong, Man Chung
AU - Wong, Lok Wing
AU - Yan, Cenqi
AU - Yu, Jiangsheng
AU - Zhao, Jiong
AU - Li, Gang
AU - Hao, Jianhua
N1 - Funding Information:
The authors gratefully acknowledge the financial support from the Research Grants Council of Hong Kong ( PolyU SRFS2122-5S02 and AoE/P-701/20 ), and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices ( GDSTC No. 2019B121205001 ).
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/11
Y1 - 2022/11
N2 - Hybrid perovskite ferroelectrics produce a revival of interest in ferroelectric photovoltaics because of the robust ferroelectricity coexisting with superior semiconducting properties. An electric field via perovskite ferroelectrics can affect their photovoltaic behavior; however, the fundamental understanding of the electric-field-induced effects remains comparatively elusive. Herein, (EA)2(MA)2Pb3Br10 single-crystalline microwire arrays (MWs) are synthesized for the fabrication of self-powered photodetectors and characterized with evident in-plane multiaxial ferroelectricity by piezoresponse force microscopy (PFM) measurements. Upon systematic investigations via a dynamic poling process, including electrical-poling-dependent photocurrent, Kelvin probe force microscopy (KPFM) mapping and ferroelectric polarization switching, we reveal that the coupling of ion migration and ferroelectric photovoltaic effect dominate the photovoltaic behavior within (EA)2(MA)2Pb3Br10 MWs. Such electric-field-induced effects are responsible for the self-powered ability in (EA)2(MA)2Pb3Br10 MWs-based photodetectors with accelerated response time, switchable photoelectric responses and large short-circuit current density. Our findings provide fundamental insight into the photovoltaic behavior under an electric field in perovskite ferroelectrics, and the electrical-poling-manipulated dynamics pave the way for innovative self-powered optoelectronic devices.
AB - Hybrid perovskite ferroelectrics produce a revival of interest in ferroelectric photovoltaics because of the robust ferroelectricity coexisting with superior semiconducting properties. An electric field via perovskite ferroelectrics can affect their photovoltaic behavior; however, the fundamental understanding of the electric-field-induced effects remains comparatively elusive. Herein, (EA)2(MA)2Pb3Br10 single-crystalline microwire arrays (MWs) are synthesized for the fabrication of self-powered photodetectors and characterized with evident in-plane multiaxial ferroelectricity by piezoresponse force microscopy (PFM) measurements. Upon systematic investigations via a dynamic poling process, including electrical-poling-dependent photocurrent, Kelvin probe force microscopy (KPFM) mapping and ferroelectric polarization switching, we reveal that the coupling of ion migration and ferroelectric photovoltaic effect dominate the photovoltaic behavior within (EA)2(MA)2Pb3Br10 MWs. Such electric-field-induced effects are responsible for the self-powered ability in (EA)2(MA)2Pb3Br10 MWs-based photodetectors with accelerated response time, switchable photoelectric responses and large short-circuit current density. Our findings provide fundamental insight into the photovoltaic behavior under an electric field in perovskite ferroelectrics, and the electrical-poling-manipulated dynamics pave the way for innovative self-powered optoelectronic devices.
KW - Ferroelectric photovoltaics
KW - Hybrid perovskite ferroelectrics
KW - Ion migration effects
KW - Self-powered photodetectors
KW - Single-crystalline microwire arrays
UR - http://www.scopus.com/inward/record.url?scp=85139404347&partnerID=8YFLogxK
U2 - 10.1016/j.mtphys.2022.100867
DO - 10.1016/j.mtphys.2022.100867
M3 - Journal article
AN - SCOPUS:85139404347
SN - 2542-5293
VL - 28
JO - Materials Today Physics
JF - Materials Today Physics
M1 - 100867
ER -