Time-Resolved Photoluminescence Measurements on ZnSe-ZnTe Superlattices

• Published in: Physica status solidi. B. Basic research Vol. 202; no. 2; pp. 1013 - 1020
• Main Authors: Suzuki, K., Wundke, K., Bley, G., Neukirch, U., Gutowski, J., Takojima, N., Sawada, T., Imai, K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.08.1997; WILEY‐VCH Verlag; Wiley
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Ii-vi semiconductors; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Photoluminescence; Physics; Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter; Fluctuations; Inorganic compounds; Semiconductor materials; Zinc tellurides; Transition element compounds; Photoluminescence; Binary compounds; Zinc selenides; Experimental study; Picosecond; Time resolution; Superlattices; Long range potential; Localized exciton
• ISSN: 0370-1972; 1521-3951
• DOI: 10.1002/1521-3951(199708)202:2<1013::AID-PSSB1013>3.0.CO;2-K

Time‐resolved photoluminescence of ZnSe–ZnTe superlattices with different Te concentrations has been measured in the picosecond time region. The samples show typical S1 (blue band) and S2 (green band) emissions in the time‐integrated spectra. In the time‐resolved spectra, both samples exhibit an asymmetrically broadened shallow component at the high‐energy side of the luminescence band, indicating the presence of shallow localized excitons due to long‐range potential fluctuations.