Selective photochemical synthesis of Ag nanoparticles on position-controlled ZnO nanorods for the enhancement of yellow-green light emission

Hyeong Ho Park, Xin Zhang, Keun Woo Lee, Ahrum Sohn, Dong Wook Kim, Joondong Kim, Jin Won Song, Young Su Choi, Hee Kwan Lee, Sang Hyun Jung, In Geun Lee, Young Dae Cho, Hyun Beom Shin, Ho Kun Sung, Kyung Ho Park, Ho Kwan Kang, Won Kyu Park, Hyung-Ho Park

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A novel technique for the selective photochemical synthesis of silver (Ag) nanoparticles (NPs) on ZnO nanorod arrays is established by combining ultraviolet-assisted nanoimprint lithography (UV-NIL) for the definition of growth sites, hydrothermal reaction for the position-controlled growth of ZnO nanorods, and photochemical reduction for the decoration of Ag NPs on the ZnO nanorods. During photochemical reduction, the size distribution and loading of Ag NPs on ZnO nanorods can be tuned by varying the UV-irradiation time. The photochemical reduction is hypothesized to facilitate the adsorbed citrate ions on the surface of ZnO, allowing Ag ions to preferentially form Ag NPs on ZnO nanorods. The ratio of visible emission to ultraviolet (UV) emission for the Ag NP-decorated ZnO nanorod arrays, synthesized for 30 min, is 20.5 times that for the ZnO nanorod arrays without Ag NPs. The enhancement of the visible emission is believed to associate with the surface plasmon (SP) effect of Ag NPs. The Ag NP-decorated ZnO nanorod arrays show significant SP-induced enhancement of yellow-green light emission, which could be useful in optoelectronic applications. The technique developed here requires low processing temperatures (120 °C and lower) and no high-vacuum deposition tools, suitable for applications such as flexible electronics.

Original languageEnglish
Pages (from-to)20717-20724
Number of pages8
JournalNanoscale
Volume7
Issue number48
DOIs
Publication statusPublished - 2015 Dec 28

Fingerprint

Light emission
Nanorods
Nanoparticles
Ions
Flexible electronics
Nanoimprint lithography
Vacuum deposition
Silver
Citric Acid
Optoelectronic devices
Irradiation
Processing

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Park, Hyeong Ho ; Zhang, Xin ; Lee, Keun Woo ; Sohn, Ahrum ; Kim, Dong Wook ; Kim, Joondong ; Song, Jin Won ; Choi, Young Su ; Lee, Hee Kwan ; Jung, Sang Hyun ; Lee, In Geun ; Cho, Young Dae ; Shin, Hyun Beom ; Sung, Ho Kun ; Park, Kyung Ho ; Kang, Ho Kwan ; Park, Won Kyu ; Park, Hyung-Ho. / Selective photochemical synthesis of Ag nanoparticles on position-controlled ZnO nanorods for the enhancement of yellow-green light emission. In: Nanoscale. 2015 ; Vol. 7, No. 48. pp. 20717-20724.
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title = "Selective photochemical synthesis of Ag nanoparticles on position-controlled ZnO nanorods for the enhancement of yellow-green light emission",
abstract = "A novel technique for the selective photochemical synthesis of silver (Ag) nanoparticles (NPs) on ZnO nanorod arrays is established by combining ultraviolet-assisted nanoimprint lithography (UV-NIL) for the definition of growth sites, hydrothermal reaction for the position-controlled growth of ZnO nanorods, and photochemical reduction for the decoration of Ag NPs on the ZnO nanorods. During photochemical reduction, the size distribution and loading of Ag NPs on ZnO nanorods can be tuned by varying the UV-irradiation time. The photochemical reduction is hypothesized to facilitate the adsorbed citrate ions on the surface of ZnO, allowing Ag ions to preferentially form Ag NPs on ZnO nanorods. The ratio of visible emission to ultraviolet (UV) emission for the Ag NP-decorated ZnO nanorod arrays, synthesized for 30 min, is 20.5 times that for the ZnO nanorod arrays without Ag NPs. The enhancement of the visible emission is believed to associate with the surface plasmon (SP) effect of Ag NPs. The Ag NP-decorated ZnO nanorod arrays show significant SP-induced enhancement of yellow-green light emission, which could be useful in optoelectronic applications. The technique developed here requires low processing temperatures (120 °C and lower) and no high-vacuum deposition tools, suitable for applications such as flexible electronics.",
author = "Park, {Hyeong Ho} and Xin Zhang and Lee, {Keun Woo} and Ahrum Sohn and Kim, {Dong Wook} and Joondong Kim and Song, {Jin Won} and Choi, {Young Su} and Lee, {Hee Kwan} and Jung, {Sang Hyun} and Lee, {In Geun} and Cho, {Young Dae} and Shin, {Hyun Beom} and Sung, {Ho Kun} and Park, {Kyung Ho} and Kang, {Ho Kwan} and Park, {Won Kyu} and Hyung-Ho Park",
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Park, HH, Zhang, X, Lee, KW, Sohn, A, Kim, DW, Kim, J, Song, JW, Choi, YS, Lee, HK, Jung, SH, Lee, IG, Cho, YD, Shin, HB, Sung, HK, Park, KH, Kang, HK, Park, WK & Park, H-H 2015, 'Selective photochemical synthesis of Ag nanoparticles on position-controlled ZnO nanorods for the enhancement of yellow-green light emission', Nanoscale, vol. 7, no. 48, pp. 20717-20724. https://doi.org/10.1039/c5nr05877e

Selective photochemical synthesis of Ag nanoparticles on position-controlled ZnO nanorods for the enhancement of yellow-green light emission. / Park, Hyeong Ho; Zhang, Xin; Lee, Keun Woo; Sohn, Ahrum; Kim, Dong Wook; Kim, Joondong; Song, Jin Won; Choi, Young Su; Lee, Hee Kwan; Jung, Sang Hyun; Lee, In Geun; Cho, Young Dae; Shin, Hyun Beom; Sung, Ho Kun; Park, Kyung Ho; Kang, Ho Kwan; Park, Won Kyu; Park, Hyung-Ho.

In: Nanoscale, Vol. 7, No. 48, 28.12.2015, p. 20717-20724.

Research output: Contribution to journalArticle

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AU - Park, Hyeong Ho

AU - Zhang, Xin

AU - Lee, Keun Woo

AU - Sohn, Ahrum

AU - Kim, Dong Wook

AU - Kim, Joondong

AU - Song, Jin Won

AU - Choi, Young Su

AU - Lee, Hee Kwan

AU - Jung, Sang Hyun

AU - Lee, In Geun

AU - Cho, Young Dae

AU - Shin, Hyun Beom

AU - Sung, Ho Kun

AU - Park, Kyung Ho

AU - Kang, Ho Kwan

AU - Park, Won Kyu

AU - Park, Hyung-Ho

PY - 2015/12/28

Y1 - 2015/12/28

N2 - A novel technique for the selective photochemical synthesis of silver (Ag) nanoparticles (NPs) on ZnO nanorod arrays is established by combining ultraviolet-assisted nanoimprint lithography (UV-NIL) for the definition of growth sites, hydrothermal reaction for the position-controlled growth of ZnO nanorods, and photochemical reduction for the decoration of Ag NPs on the ZnO nanorods. During photochemical reduction, the size distribution and loading of Ag NPs on ZnO nanorods can be tuned by varying the UV-irradiation time. The photochemical reduction is hypothesized to facilitate the adsorbed citrate ions on the surface of ZnO, allowing Ag ions to preferentially form Ag NPs on ZnO nanorods. The ratio of visible emission to ultraviolet (UV) emission for the Ag NP-decorated ZnO nanorod arrays, synthesized for 30 min, is 20.5 times that for the ZnO nanorod arrays without Ag NPs. The enhancement of the visible emission is believed to associate with the surface plasmon (SP) effect of Ag NPs. The Ag NP-decorated ZnO nanorod arrays show significant SP-induced enhancement of yellow-green light emission, which could be useful in optoelectronic applications. The technique developed here requires low processing temperatures (120 °C and lower) and no high-vacuum deposition tools, suitable for applications such as flexible electronics.

AB - A novel technique for the selective photochemical synthesis of silver (Ag) nanoparticles (NPs) on ZnO nanorod arrays is established by combining ultraviolet-assisted nanoimprint lithography (UV-NIL) for the definition of growth sites, hydrothermal reaction for the position-controlled growth of ZnO nanorods, and photochemical reduction for the decoration of Ag NPs on the ZnO nanorods. During photochemical reduction, the size distribution and loading of Ag NPs on ZnO nanorods can be tuned by varying the UV-irradiation time. The photochemical reduction is hypothesized to facilitate the adsorbed citrate ions on the surface of ZnO, allowing Ag ions to preferentially form Ag NPs on ZnO nanorods. The ratio of visible emission to ultraviolet (UV) emission for the Ag NP-decorated ZnO nanorod arrays, synthesized for 30 min, is 20.5 times that for the ZnO nanorod arrays without Ag NPs. The enhancement of the visible emission is believed to associate with the surface plasmon (SP) effect of Ag NPs. The Ag NP-decorated ZnO nanorod arrays show significant SP-induced enhancement of yellow-green light emission, which could be useful in optoelectronic applications. The technique developed here requires low processing temperatures (120 °C and lower) and no high-vacuum deposition tools, suitable for applications such as flexible electronics.

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