Quantum-size and deformation effects in PbSePb1−xEuxSe and PbSePb1−xEuxSe structures

✍ Scribed by M.V. Valeiko; I.I. Zasavitskii; A.V. Matveenko; B.N. Matsonashvili; Z.A. Rukhadze

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 612 KB
• Volume: 9
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1016/0749-6036(91)90282-v

✦ Synopsis

Photoluminescence (PL) of Pb_xSnxTe, Pb_xBuxSe and Pbl_xCaxSe epitaxial layers and mltilayer structures grown on different substrates was studied. Quantum-size and deformation effects in PL spectra were observed. Using deformation shifts and intervalley splitting the defomtion potential constants were determined for PbTe (Dd ?? 4.3 eV and Du = -2.8 eV) and PbSe (D, = 6.5 eV and Du = -3.7 eV). The EgJx,T) dependences for Pbl_xEuxSe and Pbl_x Ca Se x solid solutions were measured, and stimulated mission from structures based on these materials was observed at temperatures up to 280 K. It was found that the interand intravalley relaxation in Pbl_xSnxTe and Pbl_xEuxSe structures is appreciably different.