Method, System and Medium for Optimally Blocking Impurity Band Detector Noise

Abstract

The present invention provides a method, system and medium for optimizing the blocking of impurity band detector noise. Firstly, through numerical simulation and data fitting, the spectral density of the detector noise is related to different thicknesses of the barrier layer under a specific working bias voltage and a specific working temperature. According to the functional formula and the designed noise spectral density, the corresponding customized barrier layer thickness is extracted, and the detector manufactured according to the barrier layer thickness can make the noise spectral density meet the design requirements. The advantage of this method is that the relationship between the noise spectral density and the thickness of the barrier layer can be extracted from the barrier impurity band detectors obtained by different material systems and different process conditions, and the customized barrier layer thickness under specific working bias voltage and specific working temperature can be obtained. , the noise spectral density of the detector thus designed and produced will meet the design requirements, avoiding repeated test strips in order to optimize the design of the detector noise, greatly shortening the detector development cycle and reducing the development cost.

Description

technical field [0001] The present invention relates to the technical field of semiconductor photodetectors, in particular to a method, system and medium for optimally blocking impurity band detector noise. Background technique [0002] Terahertz waves usually refer to electromagnetic waves with wavelengths between 30 and 3000 μm (frequency between 0.1 and 10 THz), which have high reflectivity to metals and high transparency to most dielectric materials and non-polar materials. Using this characteristic, a terahertz human body security detector can be made for the detection and identification of hidden objects in the human body, and a terahertz nondestructive flaw detector can also be made for the internal defect detection of aerospace materials. In addition, terahertz waves also have fingerprint characteristics, thermal effects, and cloud penetration capabilities. Therefore, terahertz technology has broad application prospects in the fields of biomedicine, atmospheric monit...

AI Technical Summary

Problems solved by technology

For the noise design of BIB detectors, the existing method is to design a series of BIB detectors with different thicknesses of the barrier layer for test strips, and then select the best ones according to the test strip results, and the time and economic costs are high.

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