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Title: Stimulated emission induced by exciton–exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature
Authors: Sun, Handong
Makino, T.
Tuan, N. T.
Segawa, Y.
Tang, Z. K.
Wong, G. K. L.
Kawasaki, M.
Ohtomo, A.
Tamura, K.
Koinuma, H.
Keywords: DRNTU::Science::Physics
Issue Date: 2000
Source: Sun, H. D., Makino, T., Tuan, N. T., Segawa, Y., Tang, Z. K., Wong, G. K. L., et al. (2000). Stimulated emission induced by exciton–exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature. Applied Physics Letters., 77(26), 4250-4252.
Series/Report no.: Applied Physics Letters.
Abstract: The mechanism of ultraviolet stimulated emission was investigated in ZnO/ZnMgO multiquantum wells. Stimulated emission induced by exciton–exciton scattering occurred throughout a range of temperatures from 5 K to room temperature. At temperatures higher than 160 K, stimulated emission due to electron-hole plasma recombination was also observed with a higher excitation threshold than that of exciton–exciton scattering. The exciton binding energies of multiquantum wells were larger than that of bulk ZnO and increased with a decrease in the well widths. This enhancement of exciton binding energy is due to the quantum-confinement effect and is favorable for the stability of exciton states.
ISSN: 0003-6951
DOI: 10.1063/1.1333687
Rights: Applied Physics Letters © copyright 2000 American Institute of Physics. The journal's website is located at
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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