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

doi:10.1109/CLEOPR.1999.811565

Observation of enhanced bleaching and fast recovery in CdS_0.4Se_0.6 nanocrystals

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

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 CdS_0.4Se_0.6 nanocrystals in a glass matrix (Schott Glass RG630) has been measured to study the trapping effect on the bleaching dynamics.

Original language	English
Title of host publication	CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	551-552
Number of pages	2
ISBN (Electronic)	0780356616, 9780780356610
DOIs	https://doi.org/10.1109/CLEOPR.1999.811565
Publication status	Published - 1999
Event	1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999 - Seoul, Korea, Republic of Duration: 1999 Aug 30 → 1999 Sept 3

Publication series

Name	CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics
Volume	2

Other

Other	1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999
Country/Territory	Korea, Republic of
City	Seoul
Period	99/8/30 → 99/9/3

Bibliographical note

Publisher Copyright:
© 1999 IEEE.

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)

Access to Document

10.1109/CLEOPR.1999.811565

Cite this

Hwang, Y. N., Kim, C. M., Jeoung, S. C., Kim, D., & Park, S. H. (1999). Observation of enhanced bleaching and fast recovery in CdS_0.4Se_0.6 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

Hwang, Young Nam ; Kim, Cheon Min ; Jeoung, Sae Chae et al. / Observation of enhanced bleaching and fast recovery in CdS_0.4Se_0.6 nanocrystals. CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics. Institute of Electrical and Electronics Engineers Inc., 1999. pp. 551-552 (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics).

@inproceedings{02203f0640564387a22174351c9072eb,

title = "Observation of enhanced bleaching and fast recovery in CdS0.4Se0.6 nanocrystals",

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.",

author = "Hwang, {Young Nam} and Kim, {Cheon Min} and Jeoung, {Sae Chae} and Dongho Kim and Park, {Seung Han}",

note = "Publisher Copyright: {\textcopyright} 1999 IEEE.; 1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999 ; Conference date: 30-08-1999 Through 03-09-1999",

year = "1999",

doi = "10.1109/CLEOPR.1999.811565",

language = "English",

series = "CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "551--552",

booktitle = "CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics",

address = "United States",

}

Hwang, YN, Kim, CM, Jeoung, SC, Kim, D & Park, SH 1999, Observation of enhanced bleaching and fast recovery in CdS_0.4Se_0.6 nanocrystals. in CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics., 811565, CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics, vol. 2, Institute of Electrical and Electronics Engineers Inc., pp. 551-552, 1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999, Seoul, Korea, Republic of, 99/8/30. https://doi.org/10.1109/CLEOPR.1999.811565

Observation of enhanced bleaching and fast recovery in CdS_0.4Se_0.6 nanocrystals. / Hwang, Young Nam; Kim, Cheon Min; Jeoung, Sae Chae et al.

CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics. Institute of Electrical and Electronics Engineers Inc., 1999. p. 551-552 811565 (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics; Vol. 2).

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

TY - GEN

T1 - Observation of enhanced bleaching and fast recovery in CdS0.4Se0.6 nanocrystals

AU - Hwang, Young Nam

AU - Kim, Cheon Min

AU - Jeoung, Sae Chae

AU - Kim, Dongho

AU - Park, Seung Han

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0033317163&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033317163&partnerID=8YFLogxK

U2 - 10.1109/CLEOPR.1999.811565

DO - 10.1109/CLEOPR.1999.811565

M3 - Conference contribution

AN - SCOPUS:0033317163

T3 - CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics

SP - 551

EP - 552

BT - CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 1999 Pacific Rim Conference on Lasers and Electro-Optics, CLEO/Pacific Rim 1999

Y2 - 30 August 1999 through 3 September 1999

ER -

Hwang YN, Kim CM, Jeoung SC, Kim D, Park SH. Observation of enhanced bleaching and fast recovery in CdS_0.4Se_0.6 nanocrystals. In CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics. Institute of Electrical and Electronics Engineers Inc. 1999. p. 551-552. 811565. (CLEO/Pacific Rim 1999 - Pacific Rim Conference on Lasers and Electro-Optics). doi: 10.1109/CLEOPR.1999.811565