Reflectivity Studies of Trion (X-) and Exciton (X) States in ZnSe/(Zn,Mg)(S,Se) QWs
RUSSIAN ACADEMY OF SCIENCES SAINT PETERSBURG IOFFE PHYSICAL-TECHNICAL INST
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The oscillator strength of negatively charged exciton trion in ZnSeZn,MgS,Se quantum-well structures with n-type modulation doping is studied by reflection spectroscopy as a function of electron concentration and temperature. The trion oscillator strength is found to increase linearly with increasing electron concentration up to 6 x 10exp10 cmexp-2. The effect of oscillator strength shearing between the exciton and trion states is observed. The value of the oscillator strength shearing is found to be not more than 20.
- Solid State Physics
- Atomic and Molecular Physics and Spectroscopy