CdSe nanoparticles were prepared by simply mixing Na2SSeO 3 solution with CdSO4 solution under [Cd 2+]/[Se2-] (Cd/Se) ratio of 1.2 at room temperature. The nanoparticles had an average size of 2.3 nm and showed fairly strong photoluminescence (PL) with a peak at 539 nm. Deposition of cadmium (II) hydrous oxide on the CdSe nanoparticles increased photoluminescence quantum yield from 3.1 to 34.8 %, in comparison to Rhodamine 6G aqueous solution. Both of the CdSe nanoparticles and the cadmium (II) hydrous oxide deposited on CdSe nanoparticles were characterized as of cubic structure from XRD data and the electron diffraction (ED) patterns. Also, the reason for the photoluminescence enhancement was simply elucidated.
- Cadmium (II) hydrous oxide
- Surface modification
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Condensed Matter Physics