Temperature dependence of the edge excitonic transitions of the wurtzite Cd{sub 1-x-y}Be{sub x}Zn{sub y}Se crystals

Journal Article · Sat Oct 15 00:00:00 EDT 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2115096· OSTI ID:20719578

Liu, Y T; Sitarek, P; Huang, Y S; Firszt, F; Legowski, S; Meczynska, H; Marasek, A; Paszkowicz, W; Tiong, K K ^[1]

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1. Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan (China)

We report a detailed investigation of the temperature dependence of the edge excitonic transitions of three Bridgman-grown wurtzite-type Cd{sub 1-x-y}Be{sub x}Zn{sub y}Se-mixed crystals using contactless electroreflectance (CER) and photoreflectance (PR) in the temperature range of 15-400 K. X-ray investigations show that the samples with beryllium (Be) content up to x=0.1 are uniform in composition and exhibit a single wurtzite phase or a wurtzite as the main phase. The transition energies of the A,B, and C excitons of Cd{sub 1-x-y}Be{sub x}Zn{sub y}Se are determined via a line-shape fit to the CER and PR spectra. The parameters that describe the temperature dependence of the interband transition energies and the broadening function of the excitonic features are evaluated and discussed.

• OSTI ID: 20719578
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 98; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BERYLLIUM COMPOUNDS
CADMIUM COMPOUNDS
CHEMICAL ANALYSIS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
EXCITONS
LINE BROADENING
SEMICONDUCTOR MATERIALS
SOLID SOLUTIONS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
ZINC COMPOUNDS