Abstract
Various optical and electrical properties of the I-III-V compounds CuGa and CuIn have been studied. From the results of low-temperature luminescence and reflectivity, both crystals are determined to have a direct band gap. The band gaps at 2 °K are 2.53 eV for CuGa and 1.55 eV for CuIn. CuIn has been made conducting both and type, while CuGa has been made type only. Electroreflectance measurements have been performed in an attempt to determine the band structure. The highest valence band appears to be a doublet with a large admixture of Cu wave functions.
- Received 20 May 1971
DOI:https://doi.org/10.1103/PhysRevB.4.2463
©1971 American Physical Society