Surface states induced photoluminescence from Mn2+ doped CdS nanoparticles

2019-11-14 21:51:57

nanoparticles CdS states Mn2

责任者: Shu-Man Liu;Feng-Qi Liu;Hai-Qing Guo;Zhi-Hua Zhang;Zhan-Guo Wang 单位: Inst. of Semicond., Acad. Sinica, Beijing, China 来源出处: Solid State Communications(Solid State Commun. (USA)),2000//,115(11):615-18 摘要: Manganese doped CdS nanoparticles were synthesized in basic aqueous solution by using mercapto acetate as capping reagents. The nanoparticles were characterized by HRTEM, EPR, photoluminescence and optical absorption measurements. Out of our expectation, doping of Mn2+ ions altered the recombination paths in CdS nanoparticles markedly. The surface states facilitated PL from Mn2+ doped CdS nanoparticles is reported. A complete suppression of the emission from surface states at room temperature when doping with Mn2+ ions has been observed for the first time 关键词: cadmium compounds;II-VI semiconductors;impurity absorption spectra;impurity states;manganese;nanostructured materials;paramagnetic resonance;photoluminescence;surface states;transmission electron microscopy;surface states induced photoluminescence;Mn2+ doped CdS nanoparticles;basic aqueous solution;mercapto acetate;capping reagents;HRTEM;EPR;photoluminescence;optical absorption measurements;recombination paths;room temperature;CdS:Mn