Thermal-Evaporated Ag2S Thin-Film for Stacked Photodetectors toward High-Resolution Wavelength Measurement

IF 4.7 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2025-09-11 DOI:10.1021/acsaelm.5c01663

Yinyin Song, , , Zida Zheng, , and , Dianyi Liu*,

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Abstract

Inorganic metal chalcogenides, such as Ag₂S, are well-known for their high absorption coefficient, high carrier concentration, and excellent carrier transport properties. Ag₂S exhibits strong light absorption spanning from ultraviolet (UV) to near infrared (NIR), making it highly promising for photoelectric applications. In this study, Ag₂S thin films with good crystallinity and near-stoichiometric composition were prepared via the thermal evaporation process. These films demonstrated high absorption coefficient, excellent carrier mobility and high carrier concentration. The Ag₂S-based photodetector was prepared and exhibited a broadband photoresponse ranging from 350 to 1200 nm, covering both UV and NIR regions. The semitransparent Ag₂S photodetector was further developed and employed to consrtuct a high-resolution wavelength recognition system. Experimental results revealed an impressive wavelength measurement resolution of 1 nm, highlighting its potential for integration into miniature spectrometers.

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用于高分辨率波长测量的堆叠光电探测器的热蒸发Ag2S薄膜

无机金属硫族化合物，如Ag2S，以其高吸收系数、高载流子浓度和优异的载流子输运性能而闻名。Ag2S表现出从紫外（UV）到近红外（NIR）的强光吸收，使其在光电应用中具有很高的前景。本研究采用热蒸发法制备了结晶度好、成分接近化学计量的Ag2S薄膜。这些薄膜具有较高的吸收系数、优良的载流子迁移率和较高的载流子浓度。制备了基于ag2的光电探测器，其光响应范围为350 ~ 1200 nm，覆盖了紫外和近红外区域。进一步研制了半透明Ag2S光电探测器，并将其用于构建高分辨率波长识别系统。实验结果显示，其波长测量分辨率为1 nm，突出了其集成到微型光谱仪中的潜力。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico