Ligand effects on optical properties of CdSe nanocrystals
Ligand effects on optical properties of CdSe nanocrystals
复制标题
DOI：
10.1021/jp045352x
复制
发表时间：
2005-04-21
影响因子：
3.3
通讯作者：
Murray, RW
中科院分区：
文献类型：
--
作者：
Kalyuzhny, G;Murray, RW
我们报道了不同的有机和无机配体通过其光致发光和吸收光谱的变化对CdSe纳米晶(NCS)光学性质的影响。CdSe NCS溶液在稀释和提纯过程中发生表面配体丢失，导致光致发光强度降低。三辛基膦与Se原子形成的络合物是陷阱发射带相对于光致发光带边缘红移的原因。
We report effects of various organic and inorganic ligands on optical properties of CdSe nanocrystals (NCs) by changes in their photoluminescence and absorbance spectra. Surface ligand loss occurring during dilution and purification of solutions of CdSe NCs leads to a decrease of photoluminescence intensity. The complex of trioctylphosphine with Se atoms on the surface of CdSe NCs is found responsible for the trap emission band that is red-shifted relative to the photoluminescence band edge.