Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids

Noh Soo Han; Hyeong Seop Shim; Joo Hee Seo; Seung Min Park; Byoung Koun Min; Jaehoon Kim; Jae Kyu Song

doi:10.1016/j.cplett.2011.02.023

Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids

Noh Soo Han, Hyeong Seop Shim, Joo Hee Seo, Seung Min Park, Byoung Koun Min, Jaehoon Kim, Jae Kyu Song

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Optical properties of zinc oxide (ZnO) nanoparticles prepared in supercritical methanol and supercritical water were investigated. Interstitial zinc and oxygen vacancy were the major defects in the ZnO nanoparticles synthesized in supercritical methanol. The addition of oleic acid as a surface modifier resulted in the isolation of the nanoparticles and the removal of interstitial zinc. Lasing was observed with sharp longitudinal modes and a superlinear increase in the emission intensity of the ZnO nanowires synthesized in supercritical water. The band gap renormalization due to the electron-hole plasma induced a red-shift in the emission band, whereas the individual longitudinal modes were blue-shifted due to a change in refractive index.

Original language	English
Pages (from-to)	51-56
Number of pages	6
Journal	Chemical Physics Letters
Volume	505
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2011.02.023
Publication status	Published - 2011 Mar 21

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/j.cplett.2011.02.023

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@article{498648e53be24415a40197a4a0355334,

title = "Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids",

abstract = "Optical properties of zinc oxide (ZnO) nanoparticles prepared in supercritical methanol and supercritical water were investigated. Interstitial zinc and oxygen vacancy were the major defects in the ZnO nanoparticles synthesized in supercritical methanol. The addition of oleic acid as a surface modifier resulted in the isolation of the nanoparticles and the removal of interstitial zinc. Lasing was observed with sharp longitudinal modes and a superlinear increase in the emission intensity of the ZnO nanowires synthesized in supercritical water. The band gap renormalization due to the electron-hole plasma induced a red-shift in the emission band, whereas the individual longitudinal modes were blue-shifted due to a change in refractive index.",

author = "Han, {Noh Soo} and Shim, {Hyeong Seop} and Seo, {Joo Hee} and Park, {Seung Min} and Min, {Byoung Koun} and Jaehoon Kim and Song, {Jae Kyu}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2010-0012794). This work was also supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST, NRF-2009-C1AAA001-0 092 939). Additional support by Nano R&D program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (2010-0019131) is appreciated.",

year = "2011",

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doi = "10.1016/j.cplett.2011.02.023",

language = "English",

volume = "505",

pages = "51--56",

journal = "Chemical Physics Letters",

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T1 - Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids

AU - Han, Noh Soo

AU - Shim, Hyeong Seop

AU - Seo, Joo Hee

AU - Park, Seung Min

AU - Min, Byoung Koun

AU - Kim, Jaehoon

AU - Song, Jae Kyu

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2010-0012794). This work was also supported by the National Research Foundation of Korea Grant funded by the Korean Government (MEST, NRF-2009-C1AAA001-0 092 939). Additional support by Nano R&D program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (2010-0019131) is appreciated.

PY - 2011/3/21

Y1 - 2011/3/21

N2 - Optical properties of zinc oxide (ZnO) nanoparticles prepared in supercritical methanol and supercritical water were investigated. Interstitial zinc and oxygen vacancy were the major defects in the ZnO nanoparticles synthesized in supercritical methanol. The addition of oleic acid as a surface modifier resulted in the isolation of the nanoparticles and the removal of interstitial zinc. Lasing was observed with sharp longitudinal modes and a superlinear increase in the emission intensity of the ZnO nanowires synthesized in supercritical water. The band gap renormalization due to the electron-hole plasma induced a red-shift in the emission band, whereas the individual longitudinal modes were blue-shifted due to a change in refractive index.

AB - Optical properties of zinc oxide (ZnO) nanoparticles prepared in supercritical methanol and supercritical water were investigated. Interstitial zinc and oxygen vacancy were the major defects in the ZnO nanoparticles synthesized in supercritical methanol. The addition of oleic acid as a surface modifier resulted in the isolation of the nanoparticles and the removal of interstitial zinc. Lasing was observed with sharp longitudinal modes and a superlinear increase in the emission intensity of the ZnO nanowires synthesized in supercritical water. The band gap renormalization due to the electron-hole plasma induced a red-shift in the emission band, whereas the individual longitudinal modes were blue-shifted due to a change in refractive index.

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U2 - 10.1016/j.cplett.2011.02.023

DO - 10.1016/j.cplett.2011.02.023

M3 - Article

AN - SCOPUS:79952603101

SN - 0009-2614

VL - 505

SP - 51

EP - 56

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 1-3

ER -

Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids

Abstract

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