Abstract
First-principles calculations show that the defect pair in CuInS has an unusually low formation energy, due both to the relative ease of forming Cu vacancies and to the attractive interactions between and . The defect pair is predicted to be electrically inactive. This explains the surprising electrical tolerance of CuInS to its huge concentration of native defects. An attractive interaction among the defect pairs is further predicted to lead to a crystallographic ordering of the pairs, explaining the observed, but hitherto surprising, structures CuIS, CuIS, CIS, etc.
- Received 17 January 1997
DOI:https://doi.org/10.1103/PhysRevLett.78.4059
©1997 American Physical Society