Wang Xiaojun, Zheng Lianxi, Wang Qiming, Zhuang Wanru, Huang Meichun, Zheng Wanhua. STUDIES ON LOW TEMPERATURE PHOTOLUMINESCENCE SPECTRA OF InGaAs/GaAs STRAINED QUANTUM WELLS BY MOCVD[J]. Chinese Journal of Luminescence, 1994,15(3): 190-200
Wang Xiaojun, Zheng Lianxi, Wang Qiming, Zhuang Wanru, Huang Meichun, Zheng Wanhua. STUDIES ON LOW TEMPERATURE PHOTOLUMINESCENCE SPECTRA OF InGaAs/GaAs STRAINED QUANTUM WELLS BY MOCVD[J]. Chinese Journal of Luminescence, 1994,15(3): 190-200DOI:
with photoluminescence FWHM of 4.3nm at 10K only 3.49meV
is obtained by MOCVD technology.Based on studies of low temperature spectra of several InGaAs/GaAs strained quantum well samples as function of excitation intensity and temperature
we conclud that the inhomogeneity of the exciton energy caused by composition fluctuation in the well
being the greatest contributors to inhomogeneous broadening
is the major problem to be solved during MOCVD processing.The experimental results also indicate that the migration of carriers to low-energy sites in the fluctuation potentials should be considered when we study the photoluminescence line shapes of excitons in quantum wells.