Ultrafast photophysics of multiexcitons in strongly confined semiconductor nanocrystals

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ultrafast optical technique was used to study the multiexciton states in size- and shape-controlled CdSe and PbSe nanocrystals (NC). The effect of the zero-dimensional to one-dimensional transition on the efficiency of multiparticle Auger recombination using a series of quantum rods with different aspect ratios was also investigated. The transition from the three-to two-particle recombination process was observed as the nanocrystal aspect ratio was increased. The effect of quantum confinement on impact ionization using a series of PbSe NC of different sizes was also investigated. The results show that impact ionization process in NCs can be used to increase the power conversion efficiency of NC-based solar cells.

Original languageEnglish
Title of host publicationConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Pages447-448
Number of pages2
Volume1
Publication statusPublished - 2004
Event2004 IEEE LEOS Annual Meeting Conference Proceedings, LEOS 2004 - Rio Grande, Puerto Rico
Duration: Nov 7 2004Nov 11 2004

Other

Other2004 IEEE LEOS Annual Meeting Conference Proceedings, LEOS 2004
CountryPuerto Rico
CityRio Grande
Period11/7/0411/11/04

Fingerprint

Nanocrystals
Semiconductor materials
Impact ionization
Aspect ratio
Quantum confinement
Conversion efficiency
Solar cells

ASJC Scopus subject areas

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

Cite this

Klimov, V. I. (2004). Ultrafast photophysics of multiexcitons in strongly confined semiconductor nanocrystals. In Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS (Vol. 1, pp. 447-448)

Ultrafast photophysics of multiexcitons in strongly confined semiconductor nanocrystals. / Klimov, Victor I.

Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. Vol. 1 2004. p. 447-448.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Klimov, VI 2004, Ultrafast photophysics of multiexcitons in strongly confined semiconductor nanocrystals. in Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. vol. 1, pp. 447-448, 2004 IEEE LEOS Annual Meeting Conference Proceedings, LEOS 2004, Rio Grande, Puerto Rico, 11/7/04.
Klimov VI. Ultrafast photophysics of multiexcitons in strongly confined semiconductor nanocrystals. In Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. Vol. 1. 2004. p. 447-448
Klimov, Victor I. / Ultrafast photophysics of multiexcitons in strongly confined semiconductor nanocrystals. Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. Vol. 1 2004. pp. 447-448
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