All-Layer Electrodeposition of a CdTe/Hg0.1Cd0.9Te/CdTe Photodetector for Short- and Mid-Wavelength Infrared Detection

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2024-09-03 DOI:10.3390/coatings14091133
Vianey A. Candelas-Urrea, Carlos Villa-Angulo, Iván O. Hernández-Fuentes, Ricardo Morales-Carbajal, Rafael Villa-Angulo
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引用次数: 0

Abstract

CdS, CdTe, Hg0.1Cd0.9Te, CdTe, and Ag films were progressively electrodeposited on ITO-coated soda–lime glass to manufacture a short- and mid-wavelength infrared photodetector. A distinctive feature of the applied electrodeposition method is the use of a non-aqueous solution containing ethylene glycol (EG) as the electrolyte in a traditional three-electrode configuration for every film deposition. Using EG as a supplementary electrolyte and using the same deposition conditions with a potential below 0.75 V for all film coatings reduces their environmental incompatibility and offers a low-cost and low-energy route for fabricating the reported photodetector. The produced photodetector has a sensitivity of up to ≈957 nm with a detectivity (D*) of 2.86 × 1012 cm Hz1/2 W−1 and a dark current density (Jdark) of 10−6 mA cm−2. Furthermore, the manufactured photodiode exhibits self-powered performance because Voc and Jsc are self-generated, unlike previously reported photodiodes. The presented all-layer electrodeposition assembly approach can easily be adapted to fabricate sensing devices for different applications.
用于中短波红外探测的全层电沉积碲化镉/汞0.1碲化镉/碲化镉光电探测器
碲化镉(CdS)、碲化镉(CdTe)、碲化镉(Hg0.1Cd0.9Te)、碲化镉(CdTe)和银(Ag)薄膜被逐步电沉积在涂有 ITO 涂层的钠钙玻璃上,用于制造中短波长红外光探测器。所应用的电沉积方法的一个显著特点是在传统的三电极配置中使用含有乙二醇(EG)的非水溶液作为电解质来沉积每一层薄膜。使用 EG 作为辅助电解质,并对所有薄膜涂层使用相同的沉积条件(电位低于 0.75 V),可减少它们与环境的不兼容性,并为制造所报告的光电探测器提供了一条低成本、低能耗的途径。制造出的光电探测器灵敏度高达 ≈957 nm,检测率 (D*) 为 2.86 × 1012 cm Hz1/2 W-1,暗电流密度 (Jdark) 为 10-6 mA cm-2。此外,与之前报道的光电二极管不同,制造出的光电二极管具有自供电性能,因为 Voc 和 Jsc 是自产生的。所介绍的全层电沉积组装方法可以很容易地用于制造不同应用的传感设备。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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