Study on the Relationship between the Detection Wavelength and Doping of Quantum Well Infrared Photodetector

WANG Wen-xin; JIA Hua-yu; LI Deng-ao; Lü Yu-xiang; LUO Biao; LIU Ying-jun

doi:10.13756/j.gtxyj.2018.04.010

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Study on the Relationship between the Detection Wavelength and Doping of Quantum Well Infrared Photodetector

- Study on the Relationship between the Detection Wavelength and Doping of Quantum Well Infrared Photodetector
- Study on Optical communication Issue 4, Pages: 39-43(2018)
- 作者机构：
  
  1. 太原理工大学物理与光电工程学院
  2. 太原理工大学信息工程学院
  3. 武汉电信器件有限公司
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2018.04.010
  CLC： TN215
- Published：2018，
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[1]王文鑫,贾华宇,李灯熬,吕玉祥,罗飚,刘应军.量子阱红外探测器探测波长与掺杂关系研究[J].光通信研究,2018(04):39-43.

WANG Wen-xin, JIA Hua-yu, LI Deng-ao, et al. Study on the Relationship between the Detection Wavelength and Doping of Quantum Well Infrared Photodetector. [J]. (4):39-43(2018)
[1]王文鑫,贾华宇,李灯熬,吕玉祥,罗飚,刘应军.量子阱红外探测器探测波长与掺杂关系研究[J].光通信研究,2018(04):39-43. DOI： 10.13756/j.gtxyj.2018.04.010.

WANG Wen-xin, JIA Hua-yu, LI Deng-ao, et al. Study on the Relationship between the Detection Wavelength and Doping of Quantum Well Infrared Photodetector. [J]. (4):39-43(2018) DOI： 10.13756/j.gtxyj.2018.04.010.

摘要

文章利用理论模型研究了GaAs/AlxGa1-xAs量子阱红外探测器（QWIP）中掺杂参数对探测器探测波长的影响

并借助2×2哈密顿方法计算了此模型的特征能态。通过将模拟结果与现有实验数据进行对比、分析可知

当掺杂浓度增加时

峰值归一化吸收率、吸收系数和响应度等呈非线性增大。同时还发现

在AlxGa1-xAs势垒中

Al的摩尔分数（x）增加时

子带间吸收能力增强

但吸收的峰值波长会向较短的波长方向移动

进而判定掺杂浓度是高性能QWIP设计的重要参数之一。

Abstract

The influence of the doping parameters on the detection wavelength of the GaAs/AlxGa1-xAs Quantum Well Infrared Photodetector（QWIP）is studied based on the theoretical model.In addition

the 2×2 Hamiltonian method is used to calculate the characteristic energy states in this model

which lays a solid foundation for the establishment of the model.By comparing the simulated data with the existing experimental data

it is found that with the increase of doping concentration

the peak normalized absorption rate

absorption coefficient and responsivity width are nonlinearly increased.Finally

it is found that with the increasing of the mole fraction（x）of Al in the AlxGa1-xAs barrier and the inter-subband absorption

the absorbed peak wavelength shifts toward a shorter wavelength.Therefore

it’s significant to select the appropriate doping concentration for the design of high-performance QWIP.

关键词

量子阱红外探测器哈密顿方法摩尔分数掺杂浓度

Keywords

QWIPHamiltonian methodmole fractiondoping concentration

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