Time resolved photoluminescence studies of perpendicular transport in CdTe/Cd1−xMnxTe short‐period superlattices
作者:
R. Hellmann,
A. Pohlmann,
E. O. Go¨bel,
D. R. Yakovlev,
A. Waag,
R. N. Bicknell‐Tassius,
G. Landwehr,
期刊:
Journal of Applied Physics
(AIP Available online 1993)
卷期:
Volume 74,
issue 8
页码: 5272-5274
ISSN:0021-8979
年代: 1993
DOI:10.1063/1.354270
出版商: AIP
数据来源: AIP
摘要:
We present time‐resolved photoluminescence studies of perpendicular transport and the subsequent capture of photoexcited carriers in II–VI semiconductor superlattices with an enlarged quantum well. The trapping dynamics are investigated as a function of the superlattice period in the range of 30–80 A˚. We observed an efficient collection of electrons and holes in an enlarged CdTe quantum well confined by a short‐period CdTe/Cd1−xMnxTe superlattice. Both the characteristic time and the efficiency of carrier collection are found to be strongly dependent on the superlattice period. A time constant less of than 25 ps is determined for the carrier collection in a 30‐A˚‐period superlattice. Our experimental findings give evidence of Bloch type perpendicular transport in electron and heavy‐hole minibands.
点击下载:
PDF
(430KB)
返 回