Surface plasmon enhanced photoconductance and single electron effects in mesoporous titania nanofibers loaded with gold nanoparticles

Min Soo Son; Ji Eun Im; Kang Kyun Wang; Seung Lim Oh; Yong Rok Kim; Kyung Hwa Yoo

doi:10.1063/1.3291052

Surface plasmon enhanced photoconductance and single electron effects in mesoporous titania nanofibers loaded with gold nanoparticles

Min Soo Son, Ji Eun Im, Kang Kyun Wang, Seung Lim Oh, Yong Rok Kim, Kyung Hwa Yoo

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

37 Citations (Scopus)

Abstract

We have synthesized mesoporous TiO₂ nanofibers loaded with Au nanoparticles (MTNF-Au) and fabricated single nanofiber-based devices. MTNF-Au devices exhibited surface plasmon enhanced photoconductance under visible light, whereas MTNF devices without Au nanoparticles did not. Moreover, Coulomb oscillations were observed at 4.2 K in MTNF-Au devices, indicating that Au nanoparticles embedded in MTNF-Au played a role of Coulomb islands. These results suggested that the enhanced photoconductance was ascribed to electron tunneling of hot electrons generated by the surface plasmon resonance.

Original language	English
Article number	023115
Journal	Applied Physics Letters
Volume	96
Issue number	2
DOIs	https://doi.org/10.1063/1.3291052
Publication status	Published - 2010

Bibliographical note

Funding Information:
This work has been financially supported by National Research Foundation of Korea through National Core Research Center for Nanomedical Technology (Grant No. R15-20040924-00000-0) and a grant from the Korea Healthcare technology R&D Project, Ministry for Health, Welfare & Family Affairs, Republic of Korea (Grant No. A085136). J.E.I., K.K.W., and S.L.O. acknowledge the fellowship of the BK 21 program from the Ministry of Education and Human Resources Development.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.3291052

Cite this

@article{d5834b28bf104497b5b79b1e53323cb7,

title = "Surface plasmon enhanced photoconductance and single electron effects in mesoporous titania nanofibers loaded with gold nanoparticles",

abstract = "We have synthesized mesoporous TiO2 nanofibers loaded with Au nanoparticles (MTNF-Au) and fabricated single nanofiber-based devices. MTNF-Au devices exhibited surface plasmon enhanced photoconductance under visible light, whereas MTNF devices without Au nanoparticles did not. Moreover, Coulomb oscillations were observed at 4.2 K in MTNF-Au devices, indicating that Au nanoparticles embedded in MTNF-Au played a role of Coulomb islands. These results suggested that the enhanced photoconductance was ascribed to electron tunneling of hot electrons generated by the surface plasmon resonance.",

author = "Son, {Min Soo} and Im, {Ji Eun} and Wang, {Kang Kyun} and Oh, {Seung Lim} and Kim, {Yong Rok} and Yoo, {Kyung Hwa}",

note = "Funding Information: This work has been financially supported by National Research Foundation of Korea through National Core Research Center for Nanomedical Technology (Grant No. R15-20040924-00000-0) and a grant from the Korea Healthcare technology R&D Project, Ministry for Health, Welfare & Family Affairs, Republic of Korea (Grant No. A085136). J.E.I., K.K.W., and S.L.O. acknowledge the fellowship of the BK 21 program from the Ministry of Education and Human Resources Development.",

year = "2010",

doi = "10.1063/1.3291052",

language = "English",

volume = "96",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "2",

}

TY - JOUR

T1 - Surface plasmon enhanced photoconductance and single electron effects in mesoporous titania nanofibers loaded with gold nanoparticles

AU - Son, Min Soo

AU - Im, Ji Eun

AU - Wang, Kang Kyun

AU - Oh, Seung Lim

AU - Kim, Yong Rok

AU - Yoo, Kyung Hwa

N1 - Funding Information: This work has been financially supported by National Research Foundation of Korea through National Core Research Center for Nanomedical Technology (Grant No. R15-20040924-00000-0) and a grant from the Korea Healthcare technology R&D Project, Ministry for Health, Welfare & Family Affairs, Republic of Korea (Grant No. A085136). J.E.I., K.K.W., and S.L.O. acknowledge the fellowship of the BK 21 program from the Ministry of Education and Human Resources Development.

PY - 2010

Y1 - 2010

N2 - We have synthesized mesoporous TiO2 nanofibers loaded with Au nanoparticles (MTNF-Au) and fabricated single nanofiber-based devices. MTNF-Au devices exhibited surface plasmon enhanced photoconductance under visible light, whereas MTNF devices without Au nanoparticles did not. Moreover, Coulomb oscillations were observed at 4.2 K in MTNF-Au devices, indicating that Au nanoparticles embedded in MTNF-Au played a role of Coulomb islands. These results suggested that the enhanced photoconductance was ascribed to electron tunneling of hot electrons generated by the surface plasmon resonance.

AB - We have synthesized mesoporous TiO2 nanofibers loaded with Au nanoparticles (MTNF-Au) and fabricated single nanofiber-based devices. MTNF-Au devices exhibited surface plasmon enhanced photoconductance under visible light, whereas MTNF devices without Au nanoparticles did not. Moreover, Coulomb oscillations were observed at 4.2 K in MTNF-Au devices, indicating that Au nanoparticles embedded in MTNF-Au played a role of Coulomb islands. These results suggested that the enhanced photoconductance was ascribed to electron tunneling of hot electrons generated by the surface plasmon resonance.

UR - http://www.scopus.com/inward/record.url?scp=74549211242&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=74549211242&partnerID=8YFLogxK

U2 - 10.1063/1.3291052

DO - 10.1063/1.3291052

M3 - Article

AN - SCOPUS:74549211242

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 023115

ER -

Surface plasmon enhanced photoconductance and single electron effects in mesoporous titania nanofibers loaded with gold nanoparticles

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this