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The Dependence of Quantum Well Infrared Photodetectors Absorption Wave on Uniaxial Stress

Author: ZhangJiaZuo
Tutor: XuLiPing
School: University of North
Course: Condensed Matter Physics
Keywords: Quantum well infrared photodetectors Uniaxial strain Absorption wavelength Dark current
CLC: TN215
Type: Master's thesis
Year: 2011
Downloads: 36
Quote: 0
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Abstract


The quantum well infrared photodetector (QWIP) has been successfully developed in the 1990s , White has been widespread concern and has made considerable development . Compared with HgCdTe infrared detectors , quantum well infrared detectors have a fast response , similar detection rate and HgCdTe detectors , detection wavelength can be through the adjustment of the quantum well parameters control advantages , the new family known as infrared optoelectronics . Advanced technology using molecular beam epitaxy (MBE) and metal organic vapor phase epitaxy deposition (MOCVD) growth of high-quality , large-area and uniform quantum well material , easy to make a large area detector arrays , is more conducive to the QWIP development. Since the energy levels in the quantum well strain can lead to migration and division , in turn, can make the absorption band of the quantum well infrared photodetectors richer in recent years, the strain the QWIP has become a new research direction . More about of QWIP development of the status quo and works on the basis of the use of electronic interference method and Matlab software and uniaxial stress on the energy level of the quantum well guide tape uniaxial stress on the n-type quantum well infrared photodetectors the main content is as follows : 1, details QWIP works as well as the structure type , summarize the research progress and application of the quantum well infrared detectors . 2 , the use of the quantum well superlattice electronic reflection interference method to calculate the subband level structure of the quantum well infrared detectors . To study the impact of uniaxial stress on the energy levels of the AlGaAs / GaAs quantum well using Matlab to calculate the uniaxial compressive strain (force ) QWIP absorption peak . 4 , calculated using Matlab uniaxial compressive strain quantum well infrared detector dark current . 5, based on uniaxial compressive strain theory of quantum well infrared photodetectors absorption wavelength to design a new type of continuously adjustable QWIP ideas .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Infrared technology and equipment > Infrared detection,infrared detectors
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