Flexible Photodetector Arrays Based on Polycrystalline CsPbI3-xBrx Perovskite Films

All-inorganic lead halide perovskite is considered one of the promising materials for flexible photodetectors due to its stability and excellent optoelectronic properties. However, array integration of flexible perovskite photodetectors remains a major challenge due to the incompatibility of perovsk...

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Bibliographic Details
Published inIEEE electron device letters Vol. 45; no. 4; pp. 621 - 624
Main Authors Sun, Xidi, Wang, Fanyu, Guo, Xin, Wu, Jing, Li, Saite, Shi, Yi, Pan, Lijia
Format Journal Article
LanguageEnglish
Published IEEE 01.04.2024
Subjects
Electrodes
flexible
micromachining
Optical imaging
Optical sensors
Perovskite
Perovskites
photodetector arrays
Photodetectors
retinal-like visual
Substrates
Visualization
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Summary:All-inorganic lead halide perovskite is considered one of the promising materials for flexible photodetectors due to its stability and excellent optoelectronic properties. However, array integration of flexible perovskite photodetectors remains a major challenge due to the incompatibility of perovskite materials with lithographic fabrication techniques. Here, we developed a flexible high-resolution perovskite-based photodetector array. Patterned all-inorganic CsPbI3-XBrX was synthesised by PVD-spin-coating combined with a photolithographic process to produce perovskite films with precise pixel positions, controllable morphology, and uniform size. The device exhibits excellent flexibility, high detectivity, and excellent cycling stability. Moreover, the device possesses a resolution close to that of the human eye and light-trajectory addressing capability, which is potentially promising for applications in retinal-like visual sensing.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2024.3359812