Temperature Dependence of the Optical Absorption Spectra of InP/ZnS Quantum Dots / Savchenko S. S.,Vokhmintsev A. S.,Weinstein I. A. // TECHNICAL PHYSICS LETTERS. - 2017. - V. 43, l. 3. - P. 297-300.

ISSN/EISSN:

1063-7850 / 1090-6533

Type:

Article

Abstract:

The optical- absorption spectra of InP/ZnS (core/shell) quantum dots have been studied in a broad temperature range of T = 6.5- 296 K. Using the second- order derivative spectrophotometry technique, the energies of optical transitions at room temperature were found to be E1 = 2.60 +/- 0.02 eV (for the first peak of excitonic absorption in the InP core) and E-2 = 4.70 +/- 0.02 eV (for processes in the ZnS shell). The experimental curve of E-1(T) has been approximated for the first time in the framework of a linear model and in terms of the Fan's formula. It is established that the temperature dependence of E-1 is determined by the interaction of excitons and longitudinal acoustic phonons with h omega = 15 meV.

Author keywords:

SEMICONDUCTOR NANOCRYSTALS; NANOPARTICLES

DOI:

10.1134/S1063785017030221

Web of Science ID:

ISI:000399716500018

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1090-6533
Keywords-Plus	SEMICONDUCTOR NANOCRYSTALS; NANOPARTICLES
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	i.a.weinstein@urfu.ru
Funding-Acknowledgement	RF Government {[}02.A03.21.0006]; Presidential Council for Grants in Science project {[}MK-5729.2015.2]
Funding-Text	This study was supported in part by the RF Government Program 211, project no. 02.A03.21.0006. A.S. Vokhmintsev gratefully acknowledges support from the Presidential Council for Grants in Science (project no. MK-5729.2015.2).
Number-of-Cited-References	21
Usage-Count-Last-180-days	5
Usage-Count-Since-2013	5
Journal-ISO	Tech. Phys. Lett.
Doc-Delivery-Number	ES7FZ