具有多层带隙结构的半导体pin结光谱探测性能的研究  

Research on Spectral Detection Performance of Semiconductor pin Junction with Multilayer Bandgap Structure

作　　者：李青[1,5] Omolola E.Fayemi 徐俊 吴琨 周建明 雷威 LI Qing;Omolola E.Fayemi;XU Jun;WU Kun;ZHOU Jian-ming;LEI Wei(School of Electronic Science and Engineering,Joint International Research Laboratory of Information Display and Visualization,Southeast University,Nanjing 210018,CHN;Department of Chemistry,Faculty of Natural and Agricultural Sciences,North-West University(Mafikeng 5 Campus),Private Bag X2046,Mmabatho 2735,South Africa;Nanjing Perlove Medical Equipment Corporation,Nanjing 211111,CHN;Suzhou Yi He Photoelectron Science and Technology Ltd.,Suzhou Jiangsu 215100,CHN;Shi-Cheng Laboratory for Information Display and Visualization,Nanjing 210024)

机构地区：[1]东南大学电子科学与工程学院,信息显示与可视化国际合作实验室,南京210018 [2]Department of Chemistry,Faculty of Natural and Agricultural Sciences,North-West University(Mafikeng 5 Campus),Private Bag X2046,Mmabatho 2735,South Africa [3]南京普爱医疗设备股份有限公司,南京211111 [4]苏州奕赫光电子科技有限公司,江苏苏州215100 [5]石城实验室,南京210024

出　　处：《光电子技术》2023年第3期191-197,共7页Optoelectronic Technology

基　　金：国家重点研究计划国际合作专项(2021YFE0105900,2022YFE0139100);南非-中国国际合作项目(UID:132796);国家自然基金(62175028,51879042,61674029);江苏省国际合作项目(BZ2022008);江苏省基础研究领先技术计划(BK20192003);国家111-2.0引智计划(BP0719013)。

摘　　要：深入研究了宽谱入射光的吸收、光生载流子产生,以及光生载流子的输运和复合的物理过程,提出在pin半导体结中设置若干不同能量带隙的半导体层。通过这些不同能量带隙半导体层调节不同波长入射光的吸收区域,并利用偏置电压控制不同区域光生载流子的传输和复合,进而改变探测器的光谱响应特性。根据研究结果,如果设置4层带隙梯度分布的本征层,不同偏置电压下探测器光谱响应曲线的Pearson相关系数从0.99下降到0.68,为后续的探测器光谱重构提供了有效的宽谱探测数据。It was thoroughly investigated for the absorption of broadband incident light,photogenerated carrier generation,and the physical process of photogenerated carrier transport and compounding,and a number of semiconductor layers with different energy bandgaps were proposed to set up in the pin semiconductor junction in this paper.Through different energy bandgap semiconductor layers,the absorption region of incident light of different wavelengths could be adjusted,and the bias voltage could be used to control the transport and compounding of photogenerated carriers in different regions.Then the spectral response characteristics of the detector was improved.According to the results of the study,the Pearson correlation coefficient of the detector spectral response curve decreased from 0.99 to 0.68 at different bias voltages when four layers of intrinsic layers with bandgap gradient distributions were set up,providing effective broad-spectrum probing data for the subsequent spectral reconstruction of the detector.

关 键 词：波分复用算法 光谱重构 非线性相关 能量带隙 

分 类 号：TN304[电子电信—物理电子学]