Observation of enhanced bleaching and fast recovery in CdS0.4Se0.6 nanocrystals

Young Nam Hwang, Cheon Min Kim, Sae Chae Jeoung, Dongho Kim, Seung Han Park

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

Abstract

Semiconductor nanocrystals have been a subject of increasing interest due to various unique physical properties. Besides the quantum confinement in all three dimensions, various trapping processes are important factors to understand the ultrafast carrier dynamics in nanocrystals. The trapping into the surface states has been suggested to be a possible deactivation channel for the fast carrier relaxation in band-edge photoluminescence. Moreover, it is reported that photodarkening due to two photon absorption has been observed by trapping electrons into the glass electronic states. In our experiment, femtosecond transient absorption of CdS0.4Se0.6 nanocrystals in a glass matrix (Schott Glass RG630) has been measured to study the trapping effect on the bleaching dynamics.

Original languageEnglish
Title of host publicationCLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages551-552
Number of pages2
ISBN (Electronic)0780356616, 9780780356610
DOIs
Publication statusPublished - 1999 Jan 1
Event1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999 - Seoul, Korea, Republic of
Duration: 1999 Aug 301999 Sep 3

Publication series

NameCLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
Volume2

Other

Other1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999
CountryKorea, Republic of
CitySeoul
Period99/8/3099/9/3

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications
  • Physics and Astronomy(all)

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    Hwang, Y. N., Kim, C. M., Jeoung, S. C., Kim, D., & Park, S. H. (1999). Observation of enhanced bleaching and fast recovery in CdS0.4Se0.6 nanocrystals. In CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics (pp. 551-552). [811565] (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics; Vol. 2). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEOPR.1999.811565