Jiang Desheng, Lü Zhendong, Cui Liqiu, Zhou Xiangqian, Sun Baoquan, Xu Zhongying. PHOTOLUMINESCENCE STUDY ON MBE LOW TEMPERATURE-GROWN GaAs[J]. Chinese Journal of Luminescence, 1999,20(1): 7-10
Jiang Desheng, Lü Zhendong, Cui Liqiu, Zhou Xiangqian, Sun Baoquan, Xu Zhongying. PHOTOLUMINESCENCE STUDY ON MBE LOW TEMPERATURE-GROWN GaAs[J]. Chinese Journal of Luminescence, 1999,20(1): 7-10DOI:
The steady-state and transient photoluminescence (PL) of molecular beam epitaxial (MBE) low temperature-grown (LTG) GaAs samples are investigated. A weak but well-distinguished steady-state PL peak is detected from LTG-GaAs.Its peak energy has a blue shift relative to the excitonic PL peak of bulk GaAs. Furthermore
it is confirmed that the decay time of the intrinsic luminescence from bulk GaAs substrate is strongly reduced by the top LTG-GaAs layer
while no essential change occurs for the impurity related (e
A×) luminescence. The transient PL of LTG-GaAs without and after annealing is measured by using up-conversion technique. The information about recombination and trapping centers are obtained.