Specifics of the spectral and luminescent properties of ensembles of colloidal quantum dots
| Autor: | Vladimir F. Razumov, V. V. Trepalin, E. G. Mart’yanova, D. A. Kozhukhina, S. B. Brichkin, M. G. Spirin |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Analytical chemistry
Physics::Optics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics 0104 chemical sciences Condensed Matter::Materials Science chemistry.chemical_compound Wavelength Colloid Distribution function chemistry Quantum dot Indium phosphide Colloidal quantum dots Particle size Physical and Theoretical Chemistry 0210 nano-technology Luminescence |
| Zdroj: | High Energy Chemistry. 50:192-195 |
| ISSN: | 1608-3148 0018-1439 |
| DOI: | 10.1134/s0018143916030061 |
| Popis: | Using colloidal solutions of ZnS-shell indium phosphide quantum dots with two average sizes of 2.1 and 3.0 nm and a size distribution variance of 10%, it has been shown that the luminescence and the luminescence excitation spectra of the colloidal quantum dots substantially depend on the wavelength of exciting light and the detection wavelength, respectively, with both the relationships being nonlinear in character, which may indicate the bimodal type of the size distribution function. Similar measurements for CdSe colloidal quantum dots with an average particle size of dav = 2.5 nm and a variance of 6% have shown that the effect of dependence of the luminescence peak position on the excitation wavelength is manifested to a much lesser extent. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|