Abstract
Cu-rich CuGaSe2 films grown on [001] oriented GaAs substrates by molecular beam epitaxy show a remarkable low temperature photoluminescence emission peaked at 1.620 eV. This emission can be attributed to a free-to-bound recombination accompanying a donor-to-acceptor pair recombination. The ionization energies of these states are found to be 3.4 and 108 meV, respectively, via temperature dependent photoluminescence. The 108 meV state is attributed to a donor and the 3.4 meV state to an acceptor state observed.
Original language | English |
---|---|
Pages (from-to) | 2794-2798 |
Number of pages | 5 |
Journal | Journal of Applied Physics |
Volume | 81 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1997 Mar 15 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)