✦ LIBER ✦

Midinfrared photoluminescence from SnTe/PbTe/CdTe double quantum wells grown by molecular beam epitaxy

✍ Scribed by Kazuto Koike; Ryou Kawaguchi; Mitsuaki Yano

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 486 KB
Volume: 42
Category: Article
ISSN: 1386-9477
DOI: 10.1016/j.physe.2009.12.021

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✦ Synopsis

Molecular beam epitaxial growth and photoluminescence (PL) properties of SnTe/PbTe/CdTe double quantum wells (DQWs) on (1 0 0)-oriented GaAs substrates are reported. These DQWs were consisted of a very thin SnTe/PbTe QW nested in a 10-nm-thick PbTe/CdTe QW. Efficient midinfrared PL was observed from the DQWs at 300 K in agreement with the coherent SnTe/PbTe growth on the thick CdTe barrier layer. The PL peak wavelength of the DQWs was found to increase with the SnTe thickness d by covering a wide range of the 3-5 mm atmospheric window with dr 2.5 monolayer.

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