Theoretical studies of tunneling effect on absorption spectrum of a quantum well with applied electric field

H. S. Li, K. L. Wang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

The intersubband optical absorption and Stark effect of square and step quantum wells in the presence of applied electric field have been investigated theoretically. By considering the tunneling of photoexcited electrons under the influence of electric field in the quantum well, we obtain a shifted and broadened absorption spectrum from the tunneling of electrons. Such broadening leads to a decrease of absorption coefficient when the applied electric field is increased. For detector application of multiple quantum well devices, if efficient tunneling of the photoexcited electrons is desirable for high responsivity, the sharpness of the absorption peak needs to be compromised. Our results provide insight to this broadening and thus the optimization guideline for detector design.

原文English
頁(從 - 到)1383-1387
頁數5
期刊Journal of Applied Physics
71
發行號3
DOIs
出版狀態Published - 1992

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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