Title :
Size dependence of band gap variation and electron-phonon coupling in ZnO Quantum Dots
Author :
Hsieh, Wen-Feng ; Cheng, Hsin-Ming ; Lin, Kuo-Feng ; Hsu, Hsu-Cheng
Author_Institution :
Department of Photonics & Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Tahsueh Rd., Hsinchu 30050, Taiwan wfhsieh@mail.nctu.edu.tw
Abstract :
Photoluminescence and resonant Raman scattering (RRS) were investigated in various sizes of ZnO quantum dots. The size dependent shift of exciton emission reveals quantum confinement effect as changing the band gap. Besides, it was also found the enhancement of RRS intensity and electron-phonon coupling diminishes with decreasing particle’s diameter.
Keywords :
Excitons; Photoluminescence; Photonic band gap; Potential well; Quantum dots; Raman scattering; Resonance; Temperature; US Department of Transportation; Zinc oxide;
Conference_Titel :
Lasers and Electro-Optics, 2005. CLEO/Pacific Rim 2005. Pacific Rim Conference on
Print_ISBN :
0-7803-9242-6
DOI :
10.1109/CLEOPR.2005.1569477
