Title :
Effect of doping concentration on the photoluminescence of Fe:ZnS nanocrystals
Author :
Xie, Ruishi ; Liu, Lingyun ; Li, Lihua ; Li, Yuanli ; Chen, Qiang ; Yue, Xi ; Xiao, Dingquan ; Zhu, Jianguo
Author_Institution :
Coll. of Mater. Sci. & Eng., Sichuan Univ., Chengdu, China
Abstract :
Fe-soped ZnS (Fe:ZnS) nanocrystals were synthesized by a liquid-solid-solution (LSS) method. The influence of doping concentration on the photoluminescence (PL) of synthesized nanocrystals were investigated. The XRD results show that Fe:ZnS nanocrystals are crystallized with zinc-blende structure. The PL peaks of Fe:ZnS Nanocrystals have a red-shift behavior as a Fe concentration increased. These results indicate that the tuning range of emission wavelength is approximately between 440 and 464 nm in the Fe:ZnS nanocrystals by changing the Fe concentration. The red-shift the PL bands of Fe:ZnS nanocrystals may be due to the surface trap states.
Keywords :
II-VI semiconductors; X-ray diffraction; doping profiles; nanofabrication; nanostructured materials; red shift; semiconductor doping; semiconductor growth; wide band gap semiconductors; zinc compounds; XRD; ZnS:Fe; doping concentration; liquid-solid-solution method; nanocrystal synthesis; photoluminescence; red-shift behavior; surface trap states; wavelength 440 nm to 464 nm; zinc-blende structure; Decision support systems; Doping; Nanocrystals; Photoluminescence; Quadratic programming; Fe:ZnS; liquid-solid-solution method; nanocrystals; photoluminescence;
Conference_Titel :
Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4970-5
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2009.5307612
