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Growth and Optical Properties of Wurtzite and Sphalerite CdSe Epitaxial Thin Films
Author(s) -
Ludeke R.,
Paul W.
Publication year - 1967
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19670230142
Subject(s) - wurtzite crystal structure , sphalerite , epitaxy , materials science , condensed matter physics , brillouin zone , hexagonal crystal system , crystallography , band gap , thin film , spin–orbit interaction , chemistry , optoelectronics , nanotechnology , physics , layer (electronics) , metallurgy , pyrite
Abstract Growth of epitaxial thin films of sphalerite and wurtzite CdSe on cleaved BaF 2 substrates is reported. Optical transmission measurements to 6.5 eV in the ultraviolet at 300 and 80 °K were made. The spin‐orbit splitting of the A 3 ‐;A 1 transitions in cubic CdSe is 0.26 eV, in close agreement with seemingly spin‐orbit split transitions of 0.28 eV in the hexagonal phase, attributed to transitions along the Δ‐axis (the c ‐axis of the hexagonal Brillouin zone). Our findings substantiate this identification. Other optical structure is reinterpreted based on our measurements and some recent band calculations of wurtzite compounds. A band structure for wurtzite CdSe is proposed.