Optical properties of PbS/CdS superlattices grown by pulsed laser evaporation

✍ Scribed by Sergey F. Musikhin; Ludmila G. Bakueva; Vladimir I. Il'in; Oleg V. Rabizo; Larissa V. Sharonova

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 131 KB
• Volume: 15
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1994.1095

✦ Synopsis

(\mathrm{PbS} / \mathrm{CdS}) superlattices have been grown on (\mathrm{BaF}_{2}). (\mathrm{CaF}) 2, Si and glass substrates. Each specimen contained 10 to 23 pairs of the (\mathrm{PbS} / \mathrm{CdS}) layers. Absorption spectra of the structures have shown specific steps. The energy distribution of the steps has been analysed using models of Tipe-I and Tipe-II superlattices. Experimental results have been shown to follow the theoretical values of the steps for Tipe-II superlattices. This gives a foundation for classifying (\mathrm{PbS} / \mathrm{CdS}) superlattices as Tipe-II.