Title :
Photoluminescence of CdTe quantum dots in TiO2-based opaline photonic crystals
Author :
Romanov, S.G. ; Sotomayor Torres, C.M.
fDate :
6/24/1905 12:00:00 AM
Abstract :
TiO2 -based inverted opaline films filled with luminescent CdTe nanocrystals have been prepared and optically characterized. The manifestation of a photonic band gap structure in this system representing a photonic crystal with embedded light sources has been demonstrated. An angular dispersion of the Bragg resonances has been obtained from reflectance measurements. Photoluminescence emission spectra have been measured in the spectral region from 1.8 to 2.7 eV at different values of the angle of incidence, temperature, excitation wavelength and laser pump power.
Keywords :
II-VI semiconductors; cadmium compounds; nanostructured materials; optical films; optical pumping; photoluminescence; photonic band gap; photonic crystals; reflectivity; semiconductor quantum dots; titanium compounds; 1.8 to 2.7 eV; Bragg resonances; CdTe; CdTe quantum dots; TiO2; TiO2-based inverted opaline films; TiO2-based opaline photonic crystals; angle of incidence; angular dispersion; excitation wavelength; laser pump power; light sources; luminescent CdTe nanocrystals; photoluminescence; photoluminescence emission spectra; photonic band gap structure; photonic crystal; reflectance measurements; spectral region; Laser excitation; Nanocrystals; Optical films; Optical pumping; Photoluminescence; Photonic band gap; Photonic crystals; Quantum dots; Stimulated emission; Wavelength measurement;
Conference_Titel :
Transparent Optical Networks, 2002. Proceedings of the 2002 4th International Conference on
Print_ISBN :
0-7803-7375-8
DOI :
10.1109/ICTON.2002.1007843
