Pb0.8Sn0.2Se thin films: synthesis, sensitization, and properties evolution

Li, Zhen; Chen, Yingying; Lang, Haoze; Wan, Jianghong; Gao, Yan; Dong, Haitao; Zhang, Xiaoke; Feng, Wenran

doi:10.1007/s10854-022-07744-6

Cited by 3 publications

(2 citation statements)

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“…42 The current major technical challenges of uncooled lead-salt photoconductive (PC) detectors are poor uniformity and reproducibility, large 1/f noise, and difficulty to produce very small pixels. 22,43 In this paper, we demonstrate a polycrystalline PbSe/CdSe heterojunction photovoltaic detector. A 10 μm × 10 μm detector pixel is fabricated by vapor physical deposition (VPD) and wet-chemical etching technologies.…”

Section: Introductionmentioning

confidence: 99%

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High-Performance Uncooled Mid-Infrared Detector Based on a Polycrystalline PbSe/CdSe Heterojunction

Qiu

McDowell

et al. 2023

ACS Appl. Mater. Interfaces

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Developing high-performance, uncooled mid-wavelength infrared (MWIR) detectors is a challenging task due to the inherent physical properties of materials and manufacturing technologies. In this study, we designed and manufactured an uncooled polycrystalline PbSe/CdSe heterojunction photovoltaic (PV) detector through vapor physical deposition. The resulting 10 μm × 10 μm device exhibited a peak detectivity of 7.5 × 109 and 3 × 1010 cm·Hz1/2·W–1 at 298 and 220 K, respectively, under blackbody radiation. These values are comparable to those of typical PbSe photoconductive detectors fabricated through standard chemical bath deposition. Additionally, the sensitization-free process used to create these PbSe/CdSe PV detectors allows for high replicability and yield, making them promising candidates for low-cost, high-performance, uncooled MWIR focal plane array imaging in commercial applications.

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Section: Introductionmentioning

confidence: 99%

“…The current major technical challenges of uncooled lead-salt photoconductive (PC) detectors are poor uniformity and reproducibility, large 1/ f noise, and difficulty to produce very small pixels. , …”

Section: Introductionmentioning

confidence: 99%