Air-Stable
Lead-Free Perovskite Thin Film Based on
CsBi3I10 and Its Application in Resistive Switching
Devices
Posted on 2019-08-06 - 20:45
The
development of organic–inorganic hybrid perovskite materials
has been rapid in recent years; but their applications are limited
by the toxicity and stability of the materials. To address these issues
in the context of resistive switching devices, an inorganic lead-free
perovskite namely CsBi3I10 is developed. Uniform
and pinhole-free CsBi3I10 thin films can be
fabricated by using CsI-rich precursor solution via a facile antisolvent-assisted
spin-coating method. The nonvolatile resistive switching devices based
on CsBi3I10 demonstrate a large on/off ratio
(103), reliable retention properties (104 s),
and endurance (150 cycles). Conductive atomic force microscopy reveals
that the high- and low-resistance states
are formed by breaking and formation of conductive filaments in the
perovskite thin film. Because of the excellent stability of the CsBi3I10 perovskite, the devices exhibit no obvious
change in resistive switching behavior even after over 2 month storage
in an ambient (60% relative humidity) environment. Our work suggests
that the all-inorganic lead-free CsBi3I10 perovskite
has great potential in resistive switching memory as well as in other
optoelectronic devices where toxicity and stability are a concern.
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Xiong, Zhuang; Hu, Wei; She, Yin; Lin, Qiqi; Hu, Lijun; Tang, Xiaosheng; et al. (2019). Air-Stable
Lead-Free Perovskite Thin Film Based on
CsBi3I10 and Its Application in Resistive Switching
Devices. ACS Publications. Collection. https://doi.org/10.1021/acsami.9b09080
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AUTHORS (7)
ZX
Zhuang Xiong
WH
Wei Hu
YS
Yin She
QL
Qiqi Lin
LH
Lijun Hu
XT
Xiaosheng Tang
KS
Kuan Sun