期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 13, 期 9, 页码 3721-3729出版社
SPRINGER
DOI: 10.1007/s11051-011-0293-3
关键词
Semiconductor nanocrystals; PbSe; PbSe/CdSe; Core/shell; Tributylphosphine
资金
- Worcester Polytechnic Institute
- National 863 Projects of China [2007AA03Z112, 2007AA06Z112]
- State Key Laboratory on Integrated Optoelectronics, Jilin University
A small quantity of tributylphosphine was employed to improve the surface state of fresh and oxidized PbSe nanocrystals after the formation of nanocrystals. Experimental results showed that the photoluminescence intensity increased in both situations. However, an excessive amount of tributylphosphine exhibited negative effects of decreasing photoluminescence and particle aggregation. A suitable amount of tributylphosphine added before the synthesis of a CdSe shell on PbSe core (PbSe/CdSe) also exhibited a photoluminescence intensity increase for these core/shell nanocrystals.
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