We studied the effect of solvent vapours on the photoluminescent emission of self-assembled InP surface quantum dots (SQDs). Their room temperature near infrared emission undergoes a fully reversible intensity enhancement when the dots were exposed to vapours of polar solvents since polar molecules are likely to be adsorbed onto intrinsic surface states and thus reducing non radiative surface recombination. The shape and position of the emission band does not change. The observed effect is dependent on solvent type and concentration with linear law over a limited concentration range.

de Angelis, R., Casalboni, M., D’Amico, L., DE MATTEIS, F., Hatami, F., Masselink, W., et al. (2014). Vapour Sensitivity of InP Surface Quantum Dots. In Key Engineering Materials (pp. 177-180). Trans Tech Publications Ltd [10.4028/www.scientific.net/KEM.605.177].

Vapour Sensitivity of InP Surface Quantum Dots

CASALBONI, MAURO;DE MATTEIS, FABIO;PROSPOSITO, PAOLO
2014

Abstract

We studied the effect of solvent vapours on the photoluminescent emission of self-assembled InP surface quantum dots (SQDs). Their room temperature near infrared emission undergoes a fully reversible intensity enhancement when the dots were exposed to vapours of polar solvents since polar molecules are likely to be adsorbed onto intrinsic surface states and thus reducing non radiative surface recombination. The shape and position of the emission band does not change. The observed effect is dependent on solvent type and concentration with linear law over a limited concentration range.
Settore FIS/03 - Fisica della Materia
Settore ING-IND/23 - Chimica Fisica Applicata
Settore ING-IND/22
English
Rilevanza internazionale
Articolo scientifico in atti di convegno
InP, Photoluminescence, Quantum Dot (QD), Vapour Sensor
de Angelis, R., Casalboni, M., D’Amico, L., DE MATTEIS, F., Hatami, F., Masselink, W., et al. (2014). Vapour Sensitivity of InP Surface Quantum Dots. In Key Engineering Materials (pp. 177-180). Trans Tech Publications Ltd [10.4028/www.scientific.net/KEM.605.177].
de Angelis, R; Casalboni, M; D’Amico, L; DE MATTEIS, F; Hatami, F; Masselink, W; Prosposito, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/89611
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