Indirect free-exciton luminescence in AgCl

Minoru Kobayasi; Yoshihiro Matsushima; Osamu Nishi; Ken-ichi Mizuno; Atsuo H. Matsui

doi:10.1117/12.200953

9 February 1995 Indirect free-exciton luminescence in AgCl

Minoru Kobayasi, Yoshihiro Matsushima, Osamu Nishi, Ken-ichi Mizuno, Atsuo H. Matsui

Proceedings Volume 2362, International Conference on Excitonic Processes in Condensed Matter; (1995) https://doi.org/10.1117/12.200953
Event: Excitonic Processes in Condensed Matter: International Conference, 1994, Darwin, Australia

Abstract

Indirect free-exciton luminescence in AgCl single crystal accompanied by TO(L) phonon emission is found for the first time at 382.9 nm (3.238 eV) at 2 K for picosecond pulse laser excitation at 351 nm (3.53 eV). The luminescence decay curve monitored at 382.9 nm has a fast decay component, 20 ps, which is interpreted as the self-trapping time of holes generated at the L point. A luminescence band peaking at 385 nm (3.221 eV) is found, which is assigned as due to the optical transition from a point around the exit of the quantum mechanical tunneling process through the self-trapping potential barrier. The rise time 70 ps is interpreted as the time required for tunneling. A luminescence band peaking at 386.5 nm (3.208 eV) is found and assigned to be due to excitons bound by shallow impurity.

Citation Download Citation

Minoru Kobayasi, Yoshihiro Matsushima, Osamu Nishi, Ken-ichi Mizuno, and Atsuo H. Matsui "Indirect free-exciton luminescence in AgCl", Proc. SPIE 2362, International Conference on Excitonic Processes in Condensed Matter, (9 February 1995); https://doi.org/10.1117/12.200953

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