In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 10, No. 46 ( 2022), p. 17628-17637
Abstract:
Photodetectors with excellent high-temperature performance and facile fabrication are desirable for harsh environment applications. Herein, we report high-temperature, self-powered PDs by adopting 0D–3D mixed-dimensional perovskite Cs 4 Pb(BrCl) 6 –CsPbBr 2− x Cl 1+ x films and simple carbon-electrode device configuration. Cs 4 Pb(BrCl) 6 –CsPbBr 2− x Cl 1+ x films are prepared through the water-based two-step spin-coating method, wherein the CsCl additive strategy for the PbBr 2 precursor film is proposed and it is vital to the target film formation. Based on the optimized Cs 4 Pb(BrCl) 6 –CsPbBr 2− x Cl 1+ x film, the self-powered, carbon-electrode PD with outstanding photodetection performance is obtained. It yields a responsivity ( R ) peak of 0.18 A W −1 , a specific detectivity ( D *) of 1.65 × 10 13 Jones, and a response time of 1.23 μs. Moreover, 0D perovskite Cs 4 Pb(BrCl) 6 can suppress the cubic to tetragonal phase transition of 3D perovskite CsPbBr 2− x Cl 1+ x , and thus the resulting PD can work effectively at ∼300 °C, for which a dark current density of 6.34 × 10 −8 A cm −2 , an on/off ratio of over 1.44 × 10 5 , and a stable working duration of ∼300 min are achieved, indicating its excellent tolerance to high temperature and ideal compatibility for practical applications.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702245-6
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