Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles

C. W. Pao; C. T. Wu; H. M. Tsai; Y. S. Liu; C. L. Chang; W. F. Pong; J. W. Chiou; C. W. Chen; M. S. Hu; M. W. Chu; L. C. Chen; C. H. Chen; K. H. Chen; S. B. Wang; S. J. Chang; M. H. Tsai; H. J. Lin; J. F. Lee; J. H. Guo

doi:10.1103/PhysRevB.84.165412

Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles

C. W. Pao, C. T. Wu, H. M. Tsai, Y. S. Liu, C. L. Chang, W. F. Pong, J. W. Chiou, C. W. Chen, M. S. Hu, M. W. Chu, L. C. Chen, C. H. Chen, K. H. Chen, S. B. Wang, S. J. Chang, M. H. Tsai, H. J. Lin, J. F. Lee, J. H. Guo

微電子工程研究所

研究成果: Article › 同行評審

13 引文斯高帕斯（Scopus）

摘要

Silica nanowires (SiO_x-NWs) embedded with Au peapods have been studied by energy-filtered scanning transmission electron microscopy (EFTEM), O K- and Au L₃-edge x-ray absorption near-edge structure (XANES), and extended x-ray absorption fine structure (EXAFS), x-ray emission spectroscopy (XES) and scanning photoelectron microscopy. XANES and XES data show that band gaps of Au-peapod-embedded and pure SiO_x-NWs were 6.8 eV. In additional, XANES and EXAFS results indicate illumination-induced electron transfer from Au peapod to SiO_x-NWs and does not show any feature attributable to the formation of Au-Si bonding in the Au peapod embedded in SiO_x-NWs with or without illumination. Photoresponse and EFTEM measurements show that green light has more significant enhancement of photoconductivity than red and blue light due to surface plasmon resonance and suggest that transport of electrons across SiO_x-NWs is via Mott-variable-range hopping mechanism through localized or defect states.

原文	English
文章編號	165412
期刊	Physical Review B - Condensed Matter and Materials Physics
卷	84
發行號	16
DOIs	https://doi.org/10.1103/PhysRevB.84.165412
出版狀態	Published - 2011 10月 7

All Science Journal Classification (ASJC) codes

電子、光磁材料
凝聚態物理學

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10.1103/PhysRevB.84.165412

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Pao, C. W., Wu, C. T., Tsai, H. M., Liu, Y. S., Chang, C. L., Pong, W. F., Chiou, J. W., Chen, C. W., Hu, M. S., Chu, M. W., Chen, L. C., Chen, C. H., Chen, K. H., Wang, S. B., Chang, S. J., Tsai, M. H., Lin, H. J., Lee, J. F., & Guo, J. H. (2011). Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles. Physical Review B - Condensed Matter and Materials Physics, 84(16), 文章 165412. https://doi.org/10.1103/PhysRevB.84.165412

@article{bb74f333238a46fcb7cec13d8875c154,

title = "Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles",

abstract = "Silica nanowires (SiOx-NWs) embedded with Au peapods have been studied by energy-filtered scanning transmission electron microscopy (EFTEM), O K- and Au L3-edge x-ray absorption near-edge structure (XANES), and extended x-ray absorption fine structure (EXAFS), x-ray emission spectroscopy (XES) and scanning photoelectron microscopy. XANES and XES data show that band gaps of Au-peapod-embedded and pure SiOx-NWs were 6.8 eV. In additional, XANES and EXAFS results indicate illumination-induced electron transfer from Au peapod to SiOx-NWs and does not show any feature attributable to the formation of Au-Si bonding in the Au peapod embedded in SiOx-NWs with or without illumination. Photoresponse and EFTEM measurements show that green light has more significant enhancement of photoconductivity than red and blue light due to surface plasmon resonance and suggest that transport of electrons across SiOx-NWs is via Mott-variable-range hopping mechanism through localized or defect states.",

author = "Pao, {C. W.} and Wu, {C. T.} and Tsai, {H. M.} and Liu, {Y. S.} and Chang, {C. L.} and Pong, {W. F.} and Chiou, {J. W.} and Chen, {C. W.} and Hu, {M. S.} and Chu, {M. W.} and Chen, {L. C.} and Chen, {C. H.} and Chen, {K. H.} and Wang, {S. B.} and Chang, {S. J.} and Tsai, {M. H.} and Lin, {H. J.} and Lee, {J. F.} and Guo, {J. H.}",

year = "2011",

month = oct,

day = "7",

doi = "10.1103/PhysRevB.84.165412",

language = "English",

volume = "84",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "16",

}

Pao, CW, Wu, CT, Tsai, HM, Liu, YS, Chang, CL, Pong, WF, Chiou, JW, Chen, CW, Hu, MS, Chu, MW, Chen, LC, Chen, CH, Chen, KH, Wang, SB, Chang, SJ, Tsai, MH, Lin, HJ, Lee, JF & Guo, JH 2011, 'Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles', Physical Review B - Condensed Matter and Materials Physics, 卷 84, 編號 16, 165412. https://doi.org/10.1103/PhysRevB.84.165412

TY - JOUR

T1 - Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles

AU - Pao, C. W.

AU - Wu, C. T.

AU - Tsai, H. M.

AU - Liu, Y. S.

AU - Chang, C. L.

AU - Pong, W. F.

AU - Chiou, J. W.

AU - Chen, C. W.

AU - Hu, M. S.

AU - Chu, M. W.

AU - Chen, L. C.

AU - Chen, C. H.

AU - Chen, K. H.

AU - Wang, S. B.

AU - Chang, S. J.

AU - Tsai, M. H.

AU - Lin, H. J.

AU - Lee, J. F.

AU - Guo, J. H.

PY - 2011/10/7

Y1 - 2011/10/7

N2 - Silica nanowires (SiOx-NWs) embedded with Au peapods have been studied by energy-filtered scanning transmission electron microscopy (EFTEM), O K- and Au L3-edge x-ray absorption near-edge structure (XANES), and extended x-ray absorption fine structure (EXAFS), x-ray emission spectroscopy (XES) and scanning photoelectron microscopy. XANES and XES data show that band gaps of Au-peapod-embedded and pure SiOx-NWs were 6.8 eV. In additional, XANES and EXAFS results indicate illumination-induced electron transfer from Au peapod to SiOx-NWs and does not show any feature attributable to the formation of Au-Si bonding in the Au peapod embedded in SiOx-NWs with or without illumination. Photoresponse and EFTEM measurements show that green light has more significant enhancement of photoconductivity than red and blue light due to surface plasmon resonance and suggest that transport of electrons across SiOx-NWs is via Mott-variable-range hopping mechanism through localized or defect states.

AB - Silica nanowires (SiOx-NWs) embedded with Au peapods have been studied by energy-filtered scanning transmission electron microscopy (EFTEM), O K- and Au L3-edge x-ray absorption near-edge structure (XANES), and extended x-ray absorption fine structure (EXAFS), x-ray emission spectroscopy (XES) and scanning photoelectron microscopy. XANES and XES data show that band gaps of Au-peapod-embedded and pure SiOx-NWs were 6.8 eV. In additional, XANES and EXAFS results indicate illumination-induced electron transfer from Au peapod to SiOx-NWs and does not show any feature attributable to the formation of Au-Si bonding in the Au peapod embedded in SiOx-NWs with or without illumination. Photoresponse and EFTEM measurements show that green light has more significant enhancement of photoconductivity than red and blue light due to surface plasmon resonance and suggest that transport of electrons across SiOx-NWs is via Mott-variable-range hopping mechanism through localized or defect states.

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U2 - 10.1103/PhysRevB.84.165412

DO - 10.1103/PhysRevB.84.165412

M3 - Article

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SN - 1098-0121

VL - 84

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 16

M1 - 165412

ER -

Photoconduction and the electronic structure of silica nanowires embedded with gold nanoparticles

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