Synthesis and characterization of photoluminescent In-doped CdSe nanoparticles |
| |
Authors: | Knox Craig K Fillmore Sterling D Call Dawn M Allen Dan G Hess Bret C Davis Robert C Evenson William E Harrison Roger G |
| |
Institution: | Department of Chemistry, Brigham Young University, Provo, UT 84602, USA. |
| |
Abstract: | Indium-doped CdSe nanoparticles have been synthesized and characterized. Their light absorption, photoluminescence, and structure are similar to undoped CdSe nanoparticles. The greater part of the In associated with the nanoparticles is removed when the nanoparticles undergo ligand exchange by pyridine. As observed with undoped nanoparticles, a ZnS capping layer on the indium-doped nanoparticles results in enhanced nanocrystal photoluminescence. Also, the ZnS cap enhances the retention of In by the nanoparticles. Elemental analysis shows ligand exchange causes CdSe to be lost and capping with ZnS results in the loss of Se. We conclude that In-doped nanoparticles have most of the In on their surface, capping helps the nanoparticles retain the In, and they do not have altered electronic properties. |
| |
Keywords: | CdSe In-doped Nanoparticles Photoluminescence ZnS capping |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|