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TRANSIENT PHOTOLUMINESCENCE SPECTRA OF GaAs/AlGaAs QUANTUM WELLS, QUANTUM WELL WIRES, AND QUANTUM WELL BOXES
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作者 CHENG Wenqin HUANG Yi +7 位作者 ZHOU Junming FENG Wei WANG Hezhou SHE Weilong HUANG Xuguang LIN Weizhu YU Zhenxin XU Geng 《Chinese Physics Letters》 SCIE CAS CSCD 1990年第6期284-287,共4页
The interaction of the electrons with the phonons in GaAs/AlGaAs quantum wells,quantum well wires,and quantum well boxes has been studied by meansuring their time resolved photoluminescence(PL)spectra.In the quantum w... The interaction of the electrons with the phonons in GaAs/AlGaAs quantum wells,quantum well wires,and quantum well boxes has been studied by meansuring their time resolved photoluminescence(PL)spectra.In the quantum well(Q W)system,relaxation time of the electron energy of the narrower well is shorter than that of the wider well.It is attributed to the stronger interaction of the electrons with the interface mode phonons.In the Q W wires and Q W boxes,the shortening of the relaxation time is obvious.It is due to the stronger electron-phonon interaction caused by the reduction of screening effect.Our experiments also demonstrated the incident laser intensity dependence of the relaxation time. 展开更多
关键词 SPECTRA effect RELAXATION
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