Absorption Spectrum of Germanium and Zinc‐Blende‐Type Materials at Energies Higher than the Fundamental Absorption Edge
作者:
Manuel Cardona,
Gu¨nther Harbeke,
期刊:
Journal of Applied Physics
(AIP Available online 1963)
卷期:
Volume 34,
issue 4
页码: 813-818
ISSN:0021-8979
年代: 1963
DOI:10.1063/1.1729543
出版商: AIP
数据来源: AIP
摘要:
Thin films of several III–V and II–VI zinc‐blende‐type semiconductors were prepared by vacuum evaporation. Germanium thin films were prepared by epitaxial vacuum evaporation onto CaF2substrates. The absorption spectra of these films reveal, besides the fundamental absorption edge and its spin‐orbit splitting, additional structure at higher energies. This structure has been interpreted along the lines followed in the interpretation of the reflection spectra of these materials. The agreement between the values for the various energy gaps derived from absorption and from reflection spectra is excellent.
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