Broadly tunable and bimodal luminescent QDs-AlPO4 monolith in near infrared
Luminescent adjustable quantum dot (QD)-solid nanocomposites have drawn great attention to telecommunication, microelectronics and optical devices, but fabricating and tailoring the luminescence of such nanocomposites remains a challenge.Different dipping methods are designed and controlled in our laboratory to explore luminescent nanocomposites-AlPO4 mesoporous glass ”1,2” incorporated with PbS QDs ”3”, which enable the controlled luminescence with broad tunability or bimodal emission.Transmission electron microscopy images and X-ray photoelectron spectra reveal the successful solidification of PbS QDs in AlPO4 mesoporous glass.Photoluminescence spectra characterize that a typical emission in near infrared region with a broadband of 242 nm and a bimodal photoluminescence at 970 and 1224 nm are obtained by two-steps and one-step dipping method, respectively.Further research shows that photoluminescence spectra of PbS-AlPO4 nanocomposites are artificially tuned from 955 to 1061 nm as a consequence of selective adsorption by pores of AlPO4 glasses.This greatly extends the domain of QDs nanocomposites research and significantly offers an excellent approach to tailor and design the luminescence of QDs.In particularly, the PbS-AlPO4 nanocomposites with controllable emission are prospective in application to telecommunications and infrared optics.
Quantum dots mesoporous glass sol-gel photoluminescence bimodal wideband emission
Y.Wang J.He R.Li X.Yuan S.Xu L.Zhang
Key Laboratory of Materials for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, Key Laboratory of Materials for High Power Lasers, Shanghai Institute of Optics and Fine Mechanics, College of Materials Science and Engineering, China Jiliang University, 310018, Hangzhou, Zhejiang,
国内会议
杭州
英文
38-40
2014-05-15（万方平台首次上网日期，不代表论文的发表时间）