Design of wide-gap fluoride heterostructures for deep ultraviolet optical devices

作者：El Ouenzerfi R^*; Ono S; Quema A; Goto M; Sakai M; Sarukura N; Nishimatsu T; Terakubo N; Mizuseki H; Kawazoe Y; Sato H; Ehrentraut D; Yoshikawa A; Fukuda T

来源：Journal of Applied Physics, 2004, 96(12): 7655-7659.

DOI：10.1063/1.1808474

The design of fluoride-based optical devices for deep ultraviolet applications is discussed. Variations in the band-gap energy and band structure with respect to composition are investigated for Li(1-x)KxBa(1-y)MgyF3 perovskites. The band-gap energy, lattice constant, and band structure of perovskitelike fluorides are estimated based on ab initio calculations within the local-density approximation. The lattice-matched double heterostructure with direct band-gap compounds (Li(1-x)KxBa(1-y)MgyF3 on either LiBaF3 or KMgF3 substrates) is promising for fabrication.

• 出版日期2004-12-15