E-resources
Peer reviewed
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Hsu, Hsu-Cheng; Chen, Hsin-hong; Kuo, Shou-Yi; Chang, Chen-Shiung; Hsieh, Wen-Feng
Thin solid films, 2002, Volume: 419, Issue: 1Journal Article
The influence of annealing on the AgGaS 2 films grown by pulsed laser deposition has been investigated. The X-ray diffraction results show the AgGaS 2 films were found with preferential orientation (1 1 2) normal to the surface and silver droplets were diminished after the post-annealing. Photoluminescence (PL) measurements reveled the exciton energy is slightly red shifted that is possibly due to the thermal strain effect. The binding energy of the shallow donors is ∼28 meV determined from temperature dependent PL spectra. In addition, the A-exciton and the B/C-exciton could be observed in the transmittance spectra at room temperature.
