Excitonic properties of zinc-blende ZnSe/MgS superlattices studied by reflection spectroscopy

Kumano, H.; Nashiki, Hiroyuki; Suemune, Ikuo et al.

PHYSICAL REVIEW B, 1997, 55(7), 4449-4455

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アクセス権
open access
URI
https://hdl.handle.net/2115/5542
タイトル
Excitonic properties of zinc-blende ZnSe/MgS superlattices studied by reflection spectroscopy
著者
Kumano, H. ; Nashiki, Hiroyuki ; Suemune, Ikuo ; Arita, Munetaka ; Obinata, Toshio ; Suzuki, Hideki ; Uesugii, Katsuhiro ; Nakahara, Jun'ichiro
e-Rad_Researcher
70292042
著者名
Kumano, H.
熊野, 英和
著者名
Nashiki, Hiroyuki
e-Rad_Researcher
00112178
著者名
Suemune, Ikuo
著者名
Arita, Munetaka
著者名
Obinata, Toshio
著者名
Suzuki, Hideki
著者名
Uesugii, Katsuhiro
著者名
Nakahara, Jun'ichiro
言語
英語
発行日
1997-02
出版者
The American Physical Society
収録物名
PHYSICAL REVIEW B
巻(号)
55(7)
ページ
4449-4455
抄録
Excitonic properties of newly developed zinc-blende ZnSe/MgS superlattices (SL’s) were measured by reflection spectroscopy. The modification of the excitonic peaks by the multiple reflection in the SL films was treated theoretically and a fitting method to estimate the exciton absorption peak positions and exciton linewidths was developed. Although zinc-blende MgS did not exist before, excellent optical properties were observed in the ZnSe/MgS SL’s. Excitonic structures were clearly observed from 13 K up to the measured room temperature. In spite of strong ionicity of MgS barrier layers in the ZnSe/MgS SL’s, the reduction of exciton–LO-phonon coupling was clearly observed in narrower wells. This indicates that the quantum confinement effect on excitons is large due to the large band offsets and it overcomes the enhancement of exciton–LO-phonon scattering due to high ionicity in barrier layers.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
Copyright © 1997 American Physical Society
PISSN
0163-1829
関連情報
URI
http://www.aps.org/
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1103/PhysRevB.55.4449