Optical properties of CdS nanoparticles and the energy transfer from CdS nanopar

2020-03-07 17:51:39

transfer energy properties nanoparticles CdS

责任者: Patra, A.;Chowdhury, P.S.;Sen, P. 单位: Sol-Gel Div., Central Glass & Ceramic Res. Inst., Kolkata, India 来源出处: Chemical Physics Letters(Chem. Phys. Lett. (Netherlands)),26 Sept. 2005,413(4-6):311-14 摘要: In the present work, we report the synthesis of colloidal CdS nanoparticles with different sizes and the band gaps of these samples exhibit a systematic dependence on the size of particles. We also study the photophysical properties of CdS nanoparticles and the energy transfer from CdS nanoparticles to Rhodamine 6G dyes by steady state and time resolved photoluminescence spectroscopy. The experimental results show that the relaxation of the excited state of CdS nanoparticles is composed of three different components. The calculated energy transfer efficiency from CdS nanoparticles to dye is 43% for 3.0nm CdS nanoparticles. [All rights reserved Elsevier] 关键词: cadmium compounds;colloids;dyes;energy gap;excited states;II-VI semiconductors;nanoparticles;particle size;photoluminescence;time resolved spectra;optical properties;colloidal CdS nanoparticles;energy transfer;Rhodamine 6G dyes;band gaps;particle size;photophysical properties;time resolved photoluminescence spectroscopy;excited state relaxation;CdS