Novel Optical Properties of ZnSe/ZnSeTe Quantum Well Structure grown by Molecular Beam Epitaxy

• Main Authors: Fei Ping Chuang, 莊斐斌
• Other Authors: Wu Chin Chou
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/40064344660998844448

碩士 === 中原大學 === 物理學系 === 88 === In current thesis, the photoluminescence (PL) measurement was used to observe the novel optical properties caused by the quantum confinement effect of the Te cluster bound exciton of ZnSe/ZnSeTe quantum well structures, which were grown by molecular beam epitaxy. The quantum confinement effect, the transition energy of Te cluster bound exciton decreases with the well width of the ZnSeTe layers, the Te cluster bound exciton was first observed in the ZnSe/ZnSeTe quantum well structures. The effective Bohr radius of the Te cluster bound exciton was estimated to be around 3.0 nm. A number of dislocation lines, which were produced due to the large lattice mismatch between the ZnSe barrier and ZnSeTe well layer, were observed from the transmission electron microscopy study. However, very bright PL was observed at 10K.