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Ag2S QDs/Si Heterostructure-Based Ultrasensitive SWIR Range Detector

机译:AG2S QDS / SI异质结构的超敏感速率范围探测器

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摘要

In the 20th century, microelectronics was revolutionized by silicon—its semiconducting properties finally made it possible to reduce the size of electronic components to a few nanometers. The ability to control the semiconducting properties of Si on the nanometer scale promises a breakthrough in the development of Si-based technologies. In this paper, we present the results of our experimental studies of the photovoltaic effect in Ag2S QD/Si heterostructures in the short-wave infrared range. At room temperature, the Ag2S/Si heterostructures offer a noise-equivalent power of 1.1 × 10−10 W/√Hz. The spectral analysis of the photoresponse of the Ag2S/Si heterostructures has made it possible to identify two main mechanisms behind it: the absorption of IR radiation by defects in the crystalline structure of the Ag2S QDs or by quantum QD-induced surface states in Si. This study has demonstrated an effective and low-cost way to create a sensitive room temperature SWIR photodetector which would be compatible with the Si complementary metal oxide semiconductor technology.
机译:在20世纪,微电子是由硅,其具有半导体性质彻底改变终于使人们有可能对电子元件的尺寸缩小到几纳米。控制在纳米尺度硅的半导体特性的能力有望在硅基技术发展的突破口。在本文中,我们提出我们的在硫化银QD / Si的异质结构的光伏效应的实验研究的结果在短波红外范围内。在室温下,该硫化银/硅异质结构提供1.1×10-10 W /√Hz的的噪声等效功率。该硫化银/硅异质结构的光响应的频谱分析使得有可能确定它后面的两个主要机制:IR辐射通过在硫化银量子点的晶体结构或者通过在硅量子QD诱导的表面状态的缺陷的吸收。这项研究表明,以创建一个敏感室温SWIR光检测器,其将与硅互补金属氧化物半导体技术兼容的有效和低成本的方式。

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