Band-gap engineering of ZnSe quantum dots via a non-TOP green synthesis by use of organometallic selenium compound
| Autor: | Rupinder K. Beri, B.G. Bharate, Priyesh V. More, Pawan K. Khanna |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Photoluminescence
Materials science business.industry General Physics and Astronomy chemistry.chemical_element Zinc Photochemistry Blueshift symbols.namesake Quantization (physics) Semiconductor chemistry Quantum dot Stokes shift symbols Optoelectronics General Materials Science Spectroscopy business |
| Zdroj: | Current Applied Physics. 10:553-556 |
| ISSN: | 1567-1739 |
| DOI: | 10.1016/j.cap.2009.07.019 |
| Popis: | Single-step green synthesis of ZnSe quantum dots (QDs) from 1,2,3-selenadiazole and zinc acetate resulted in formation of high-quality mono-disperse ZnSe with engineered band-gap. The present method is a non-TOP green route where oleic acid is used as a surfactant. The size quantization effect can be monitored by UV–visible spectroscopy which shows in the range 370–387 nm (3.20–3.35 eV), a blue shift of about 70–90 nm with respect bulk ZnSe. Photoluminescence measurement revealed band-gap emission at ∼390 nm (3.18 eV, Stokes shift of |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect