Kalyuzhny Gregory, Murray Royce W
Kenan Laboratories of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599, USA.
J Phys Chem B. 2005 Apr 21;109(15):7012-21. doi: 10.1021/jp045352x.
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.
我们通过改变CdSe纳米晶体（NCs）的光致发光和吸收光谱，报道了各种有机和无机配体对其光学性质的影响。CdSe NCs溶液在稀释和纯化过程中发生的表面配体损失导致光致发光强度降低。发现三辛基膦与CdSe NCs表面的Se原子形成的络合物是导致相对于光致发光带边缘发生红移的陷阱发射带的原因。
