Zhirko, Yu.I.; Zharkov, I.P.
(Semiconductor Physics Quantum Electronics & Optoelectronics, 2003)
We show that processes of creation, radiation and decay of the ground (n = 1) and excited exciton states in layered n-InSe and p-GaSe crystals involve direct (photon -> exciton -> photon, at k = 0), as well as indirect ...