期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 387, 期 -, 页码 76-78出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2014.01.015
关键词
PbS; Quantum dots; Thermal diffusion; Thermal treatment
资金
- Basic Science Research through the National Research Foundation of Korea (NRF) [2010-0022407]
- Priority Research Center through the National Research Foundation of Korea (NRF) [2009-0094036]
- Ministry of Education, Science and Technology
Precipitation of PbS quantum dots (QDs) in glasses was controlled by thermal diffusion of Ag+ ions from Ag paste at a temperature of 320 degrees C After subsequent heat treatment at 420-450 degrees C, PbS QDs formed in the near-surface regions where the silver paste was applied. After the glasses were heat-treated at 440 or 450 degrees C, PbS QDs were larger in Ag-affected surface regions than in Ag-free glasses. PbS QDs grew in Ag-affected regions when they were heat-treated at 420 or 430 degrees C. Ag+ ions penetrated similar to 25 mu m from the glass surface after thermal diffusion of Ag+ ions and subsequent heat treatment at 430 degrees C. Thermal diffusion of Ag+ ions from Ag paste is a viable method to control the precipitation and spatial distribution of PbS QDs in glasses. (C) 2014 Elsevier B.V. All rights reserved.
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