Ultrafast energy relaxation and carrier trapping dynamics in semiconductor nanocrystals

Victor I Klimov; Duncan W. McBranch

Ultrafast energy relaxation and carrier trapping dynamics in semiconductor nanocrystals

Los Alamos National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The femtosecond transient absorption and time-resolved photoluminescence studies of ultrafast energy relaxation and recombination in II-VI semiconductor nanocrystals (NC) with a variety of sizes, spanning different confinement regimes are reported. The issue on the existence of the `phonon bottleneck' is addressed in carrier relaxation dynamics predicted for quantum confined systems. Surface trapping in NC with different surface treatment and many-particle Auger-type interactions are also reported in case of multiple-pair excitations.

Original language	English
Title of host publication	Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Editors	Anon
Publisher	IEEE
Pages	439-440
Number of pages	2
Volume	2
Publication status	Published - 1997
Event	Proceedings of the 1997 10th IEEE Lasers and Electro-Optics Society Annual Meeting, LEOS. Part 2 (of 2) - San Francisco, CA, USA Duration: Nov 10 1997 → Nov 13 1997

Other

Other	Proceedings of the 1997 10th IEEE Lasers and Electro-Optics Society Annual Meeting, LEOS. Part 2 (of 2)
City	San Francisco, CA, USA
Period	11/10/97 → 11/13/97

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering
Industrial and Manufacturing Engineering

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Cite this

Klimov, VI & McBranch, DW 1997, Ultrafast energy relaxation and carrier trapping dynamics in semiconductor nanocrystals. in Anon (ed.), Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. vol. 2, IEEE, pp. 439-440, Proceedings of the 1997 10th IEEE Lasers and Electro-Optics Society Annual Meeting, LEOS. Part 2 (of 2), San Francisco, CA, USA, 11/10/97.

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abstract = "The femtosecond transient absorption and time-resolved photoluminescence studies of ultrafast energy relaxation and recombination in II-VI semiconductor nanocrystals (NC) with a variety of sizes, spanning different confinement regimes are reported. The issue on the existence of the `phonon bottleneck' is addressed in carrier relaxation dynamics predicted for quantum confined systems. Surface trapping in NC with different surface treatment and many-particle Auger-type interactions are also reported in case of multiple-pair excitations.",

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AB - The femtosecond transient absorption and time-resolved photoluminescence studies of ultrafast energy relaxation and recombination in II-VI semiconductor nanocrystals (NC) with a variety of sizes, spanning different confinement regimes are reported. The issue on the existence of the `phonon bottleneck' is addressed in carrier relaxation dynamics predicted for quantum confined systems. Surface trapping in NC with different surface treatment and many-particle Auger-type interactions are also reported in case of multiple-pair excitations.

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