Abstract
The II-VI materials lattice matched to GaSb substrates are desirable for ultrahigh-efficiency multijunction solar cells. This paper reports the growth of ZnTe and ZnCdTe/ZnTe quantum wells on undoped GaSb (1 0 0) substrates using molecular beam epitaxy. During growth, in situ reflection high-energy electron diffraction shows fast and smooth transition from GaSb surface to ZnTe surface. Post-growth structural characterization using X-ray diffraction and high-resolution transmission electron microscopy reveals very low-defect density, i.e. high crystalline quality. Visible photoluminescence is observed from 10 to 300 K.
Original language | English (US) |
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Pages (from-to) | 2116-2119 |
Number of pages | 4 |
Journal | Journal of Crystal Growth |
Volume | 311 |
Issue number | 7 |
DOIs | |
State | Published - Mar 15 2009 |
Keywords
- A1. X-ray diffraction
- A3. Molecular beam epitaxy
- B2. Semiconducting II-VI materials
- B3. Solar cells
ASJC Scopus subject areas
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry