非制冷型极光技术的进展:通过 CuFeSe2$left(\text{CuFeSe}\right)_{2}$ 纳米晶体胶体薄膜实现短波红外探测

IF 2.5 4区 物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Physica Status Solidi-Rapid Research Letters Pub Date : 2024-02-28 DOI:10.1002/pssr.202300440
Ashutosh Vishwakarma, Chinmay Shailendra Gharpure, Anumol Sugathan, Anshu Pandey, Sushobhan Avasthi
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引用次数: 0

摘要

微测辐射热计已经成为冷却红外光子探测器的一种经济有效的替代品,尽管在响应度()、探测度()和响应时间()方面存在一定的折衷。夜视设备、军事监控和自动驾驶汽车的潜在应用推动了这一领域的研究,导致人们对探索新材料以缩小冷却光子探测器和非冷却长波探测器之间性能差距的兴趣与日俱增。本研究的重点是胶体溶液中纳米晶体(NCs)的光电和测光特性。当温度变化范围从 170K 到 400K 时,这些 NC 的电阻率 (ρ)会发生显著变化。具体来说,室温电阻率为 505 Ω cm 时,每开尔文的电阻温度系数 (TCR) α 为 1.9%。此外,据报道 NC 的响应率为 0.101 A/W,胶体溶液的霍尔迁移率为 。最后,我们还对 VOx 和 a-Si 等已建立的长波仪材料的性能指标与胶体 NC 的性能指标进行了综合比较。根据研究结果,胶体数控技术是未来螺栓计技术的一个有前途的选择。本文受版权保护。
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ADVANCEMENTS IN UNCOOLED BOLOMETER TECHNOLOGY: SHORT‐WAVE INFRARED DETECTION VIA CuFeSe2$\left(\text{CuFeSe}\right)_{2}$ NANOCRYSTAL COLLOIDAL THIN‐FILMS
Microbolometers have emerged as a cost‐effective alternative to cooled infrared photon detectors, albeit with certain trade‐offs in terms of responsivity (), detectivity (), and response time (). The research in this field has been driven by the potential applications in night vision devices, military surveillance, and autonomous vehicles, leading to a growing interest in exploring new materials to bridge the performance gap between cooled photon detectors and uncooled bolometers. This study focuses on the optoelectronic and bolometric characteristics of nanocrystals (NCs) in a colloidal solution. These NCs exhibit a significant change in resistivity (ρ) when subjected to temperature variations ranging from 170K to 400K. Specifically, the Temperature Coefficient of Resistance (TCR), α, is 1.9% per Kelvin for a room temperature resistivity of 505 Ω cm. Furthermore, the responsivity of NCs is reported to be 0.101 A/W, and the Hall mobility of the colloidal solution is determined as . Finally, a comprehensive comparison is conducted between the performance metrics of established bolometer materials, such as VOx and a‐Si, and those of colloidal NCs. Based on the results, colloidal NCs are a promising option for future bolometer technology.This article is protected by copyright. All rights reserved.
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来源期刊
Physica Status Solidi-Rapid Research Letters
Physica Status Solidi-Rapid Research Letters 物理-材料科学:综合
CiteScore
5.20
自引率
3.60%
发文量
208
审稿时长
1.4 months
期刊介绍: Physica status solidi (RRL) - Rapid Research Letters was designed to offer extremely fast publication times and is currently one of the fastest double peer-reviewed publication media in solid state and materials physics. Average times are 11 days from submission to first editorial decision, and 12 days from acceptance to online publication. It communicates important findings with a high degree of novelty and need for express publication, as well as other results of immediate interest to the solid-state physics and materials science community. Published Letters require approval by at least two independent reviewers. The journal covers topics such as preparation, structure and simulation of advanced materials, theoretical and experimental investigations of the atomistic and electronic structure, optical, magnetic, superconducting, ferroelectric and other properties of solids, nanostructures and low-dimensional systems as well as device applications. Rapid Research Letters particularly invites papers from interdisciplinary and emerging new areas of research.
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