Linear and nonlinear transmission of Cux S quantum dots

V. Klimov, P. Haring Bolivar, H. Kurz, V. Karavanskii, V. Krasovskii, Yu Korkishko

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62 Citations (Scopus)

Abstract

CuxS nanocrystals (NC's) are reported. The samples are prepared by a CdS-to-CuxS chemical conversion from the glasses originally containing CdS NC's. A room-temperature linear absorption of the converted samples shows several well resolved peaks with spectral positions from red to blue. These spectral features are explained by size quantization within Cu xS NC's (∼4 nm radius) with different copper deficiency [x is in the range from 1.8 (digenite) to 2 (chalcosite)]. A strong bleaching of the samples with a 3-ns relaxation is observed in the pump-probe measurements. A high value of the third-order nonlinear susceptibility (∼10-7 esu) is derived from the nonlinear transmission spectra.

Original languageEnglish
Pages (from-to)653
Number of pages1
JournalApplied Physics Letters
Volume67
DOIs
Publication statusPublished - 1995

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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