Effect of interdiffusion of quantum well infrared photodetector

作者: Alex S. W. Lee , E. Herbert Li

DOI: 10.1063/1.117213

关键词: OptoelectronicsAbsorption spectroscopyAbsorption (electromagnetic radiation)OpticsInfraredResponsivityQuantum well infrared photodetectorQuantum wellChemistryPhotodetectorDark current

摘要: The intersubband infrared photodetector performance is theoretically analyzed for various stages of interdiffusion in AlGaAs/GaAs quantum well. absorption strength and responsivity are enhanced certain extents the peak detection wavelength red shifts continuously with a large tunable range from 7 to 38.4 μm. dark current at an acceptable value small diffusion extent.

参考文章(11)
D. D. Coon, R. P. G. Karunasiri, New mode of IR detection using quantum wells Applied Physics Letters. ,vol. 45, pp. 649- 651 ,(1984) , 10.1063/1.95343
J. D. Ralston, M. Ramsteiner, B. Dischler, M. Maier, G. Brandt, P. Koidl, D. J. As, Intersubband transitions in partially interdiffused GaAs/AlGaAs multiple quantum-well structures Journal of Applied Physics. ,vol. 70, pp. 2195- 2199 ,(1991) , 10.1063/1.350334
B. F. Levine, C. G. Bethea, K. K. Choi, J. Walker, R. J. Malik, Tunneling lifetime broadening of the quantum well intersubband photoconductivity spectrum Applied Physics Letters. ,vol. 53, pp. 231- 233 ,(1988) , 10.1063/1.100391
A. G. Steele, H. C. Liu, M. Buchanan, Z. R. Wasilewski, Importance of the upper state position in the performance of quantum well intersubband infrared detectors Applied Physics Letters. ,vol. 59, pp. 3625- 3627 ,(1991) , 10.1063/1.106379
B. F. Levine, A. Zussman, S. D. Gunapala, M. T. Asom, J. M. Kuo, W. S. Hobson, Photoexcited escape probability, optical gain, and noise in quantum well infrared photodetectors Journal of Applied Physics. ,vol. 72, pp. 4429- 4443 ,(1992) , 10.1063/1.352210
B. F. Levine, K. K. Choi, C. G. Bethea, J. Walker, R. J. Malik, Quantum well avalanche multiplication initiated by 10 μm intersubband absorption and photoexcited tunneling Applied Physics Letters. ,vol. 51, pp. 934- 936 ,(1987) , 10.1063/1.98806
B. F. Levine, C. G. Bethea, G. Hasnain, V. O. Shen, E. Pelve, R. R. Abbott, S. J. Hsieh, High sensitivity low dark current 10 μm GaAs quantum well infrared photodetectors Applied Physics Letters. ,vol. 56, pp. 851- 853 ,(1990) , 10.1063/1.102682
Doyeol Ahn, Shun-lien Chuang, Calculation of linear and nonlinear intersubband optical absorptions in a quantum well model with an applied electric field IEEE Journal of Quantum Electronics. ,vol. 23, pp. 2196- 2204 ,(1987) , 10.1109/JQE.1987.1073280