Chemical Sensitivity of Luminescent Epitaxial Surface InP Quantum Dots
| Autor: | Fabio De Matteis, L. D’Amico, Mauro Casalboni, Ivan Colantoni, Paolo Prosposito, William Ted Masselink, Fariba Hatami, Roberta De Angelis |
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| Rok vydání: | 2013 |
| Předmět: |
Photoluminescence
business.industry Chemistry technology industry and agriculture Analytical chemistry Epitaxy medicine.disease Settore FIS/03 - Fisica della Materia Solvent chemistry.chemical_compound Quantum dot medicine Optoelectronics Methanol business Luminescence Vapours Molecular beam epitaxy |
| Zdroj: | Journal of Sensor Technology. :1-5 |
| ISSN: | 2161-1238 2161-122X |
| DOI: | 10.4236/jst.2013.31001 |
| Popis: | Surface InP quantum dots grown by gas source molecular beam epitaxy on In0.48Ga0.52P buffer layer lattice matched to GaAs substrate shows a broad-band near-infrared photoluminescence ranging from 750 to 865 nm dependent on their dimensions. A reversible luminescence intensity enhancement has been observed when the quantum dots were exposed to vapours of different chemical solvents with the highest sensitivity for alcohol (methanol and ethanol) vapours. The luminescent behaviour is dependent on the solvent type and concentration. The peak energy and band shape of the luminescence are not affected by the solvent vapour. |
| Databáze: | OpenAIRE |
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