外文题目: Stability promoted close-packed quantum dot-AlPO4 glass films with tunable and bimodal luminescence
作者: Wang, Yan; He, Jin; Li, Rihong; Chen, Siyuan; Yuan, Xinqiang; Zhang, Long
刊名: J. Non-Cryst. Solids
年: 2016 卷: 431 页： 88--92
英文关键词:
Optical materials; Quantum dots; Sol-gel; Photostability; Energy-transfer
LIGHT-EMITTING-DIODES; PBS NANOCLUSTERS; DOTS; EMISSION; LAYER
英文摘要:
Broadly tunable and multi-emission PbS quantum dot (QD)-solid systems have drawn great attention to the applications of telecommunication, microelectronics and solar cells. Here, we propose a simple and practical method for creation of QD-systems in porous AlPO4 glass film matrix. Tunable and bimodal luminescent films in near infrared are achieved by a layer by layer assembly method with PbS QDs of different sizes. Atomic force microscopy and scanning electron microscopy reveal the successful deposition and homogeneous surface morphology of QD-AlPO4 glass films. Furthermore, as a result of adsorption and confinement from pores of AlPO4 substrate, the photostability of QD-AlPO4 glass films is dramatically improved. The red-shift of QD photoluminescence spectra after depositing onto the matrix and the energy transfer between QDs of different sizes indicate the formation of close-packed QD solid systems. This work extends the research in QD close-packed systems and has important implications for the applications of blended QDs in broadly tunable optical devices and telecommunication. (C) 2015 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1016/j.jnoncrysol.2015.04.021


全文传递服务