Fabrication of porous CuxZn1-xS/ GaN heterojunctions for ultraviolet photodetector application

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-02-28 DOI:10.1016/j.optmat.2025.116881

KaiDa Jia , Wei Jia , TianBao Li , GuangMei Zhai , HengLei Ren , HaiLiang Dong , PengQi Dong , BingShe Xu

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引用次数: 0

Abstract

Porous Cu_xZn_1-xS/GaN UV Photodetectors fabricated by a heterojunction between porous n-GaN and Cu_xZn_1-xS films were prepared by high-temperature annealing and chemical bath deposition. By adjusting the ratio of Cu and Zn in the Cu_xZn_1-xS films, with x defined as Cu (mol%)/(Cu + Zn) (mol%), distinct transparency, conductivity, and energy banding properties are achieved, which thereby significantly influences the optoelectronic performance of the UV PDs. The findings of the study demonstrated that the devices exhibit excellent rectification characteristics and repeatable photocurrent responses. When the value of x is 0.4, in particular, exhibits pronounced performances working under an ultraviolet light of 43.5 μW/cm² at 0 V, including high on/off ratio (∼5.27 × 10⁴), remarkable responsivity (0.574 A/W), ultrahigh specific detectivity (8.75 × 10¹⁴ Jones), high external quantum efficiency (195.02 %) and fast response speed (0.09/36 ms). This study provides theoretical insights and experimental evidence to facilitate the development of next-generation optoelectronic devices utilizing Cu_xZn_1-xS/GaN heterojunctions.

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.