Electronic and atomic structures of gasochromic V2O5 films

C. L. Chen, C. L. Dong, Y. K. Ho, C. C. Chang, Da Hua Wei, A. T C Chan, J. L. Chen, W. L. Jang, C. C. Hsu, Krishna Kumar, M. K. Wu

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A gasochromic Pt/V2O5 film was fabricated by the sol-gel process and it exhibited excellent color change performance from yellow to gray/black upon exposure to hydrogen gas under ambient conditions. X-ray absorption spectroscopy was employed to study the unoccupied electronic states in detail and to explore the gasochromic effect and its coloration mechanism. Upon injection of hydrogen, gashochromism was revealed to correlate strongly with the change of both electronic and atomic structures. Since the hydrogen supplied an extra electron, the hybridization between vanadium 3d and oxygen 2p was modified, reducing the valence state of vanadium from 5 + to 4.1 + . Linear polarized synchrotron X-rays were utilized to investigate the change in the structural symmetry and the orbital orientation. Along with the electronic structure, the geometric modulation of the VO6 octahedron is crucial to the gasochromic mechanism, as also revealed in this study.

Original languageEnglish
Article number17006
JournalEurophysics Letters
Volume101
Issue number1
DOIs
Publication statusPublished - Jan 2013
Externally publishedYes

Fingerprint

atomic structure
electronic structure
vanadium
hydrogen
color
sol-gel processes
absorption spectroscopy
synchrotrons
x rays
injection
valence
modulation
orbitals
symmetry
oxygen
electronics
gases
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Chen, C. L., Dong, C. L., Ho, Y. K., Chang, C. C., Wei, D. H., Chan, A. T. C., ... Wu, M. K. (2013). Electronic and atomic structures of gasochromic V2O5 films. Europhysics Letters, 101(1), [17006]. https://doi.org/10.1209/0295-5075/101/17006

Electronic and atomic structures of gasochromic V2O5 films. / Chen, C. L.; Dong, C. L.; Ho, Y. K.; Chang, C. C.; Wei, Da Hua; Chan, A. T C; Chen, J. L.; Jang, W. L.; Hsu, C. C.; Kumar, Krishna; Wu, M. K.

In: Europhysics Letters, Vol. 101, No. 1, 17006, 01.2013.

Research output: Contribution to journalArticle

Chen, CL, Dong, CL, Ho, YK, Chang, CC, Wei, DH, Chan, ATC, Chen, JL, Jang, WL, Hsu, CC, Kumar, K & Wu, MK 2013, 'Electronic and atomic structures of gasochromic V2O5 films', Europhysics Letters, vol. 101, no. 1, 17006. https://doi.org/10.1209/0295-5075/101/17006
Chen CL, Dong CL, Ho YK, Chang CC, Wei DH, Chan ATC et al. Electronic and atomic structures of gasochromic V2O5 films. Europhysics Letters. 2013 Jan;101(1). 17006. https://doi.org/10.1209/0295-5075/101/17006
Chen, C. L. ; Dong, C. L. ; Ho, Y. K. ; Chang, C. C. ; Wei, Da Hua ; Chan, A. T C ; Chen, J. L. ; Jang, W. L. ; Hsu, C. C. ; Kumar, Krishna ; Wu, M. K. / Electronic and atomic structures of gasochromic V2O5 films. In: Europhysics Letters. 2013 ; Vol. 101, No. 1.
@article{2fc857f6b9ef45089246ba5b5c9583af,
title = "Electronic and atomic structures of gasochromic V2O5 films",
abstract = "A gasochromic Pt/V2O5 film was fabricated by the sol-gel process and it exhibited excellent color change performance from yellow to gray/black upon exposure to hydrogen gas under ambient conditions. X-ray absorption spectroscopy was employed to study the unoccupied electronic states in detail and to explore the gasochromic effect and its coloration mechanism. Upon injection of hydrogen, gashochromism was revealed to correlate strongly with the change of both electronic and atomic structures. Since the hydrogen supplied an extra electron, the hybridization between vanadium 3d and oxygen 2p was modified, reducing the valence state of vanadium from 5 + to 4.1 + . Linear polarized synchrotron X-rays were utilized to investigate the change in the structural symmetry and the orbital orientation. Along with the electronic structure, the geometric modulation of the VO6 octahedron is crucial to the gasochromic mechanism, as also revealed in this study.",
author = "Chen, {C. L.} and Dong, {C. L.} and Ho, {Y. K.} and Chang, {C. C.} and Wei, {Da Hua} and Chan, {A. T C} and Chen, {J. L.} and Jang, {W. L.} and Hsu, {C. C.} and Krishna Kumar and Wu, {M. K.}",
year = "2013",
month = "1",
doi = "10.1209/0295-5075/101/17006",
language = "English",
volume = "101",
journal = "Europhysics Letters",
issn = "0295-5075",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Electronic and atomic structures of gasochromic V2O5 films

AU - Chen, C. L.

AU - Dong, C. L.

AU - Ho, Y. K.

AU - Chang, C. C.

AU - Wei, Da Hua

AU - Chan, A. T C

AU - Chen, J. L.

AU - Jang, W. L.

AU - Hsu, C. C.

AU - Kumar, Krishna

AU - Wu, M. K.

PY - 2013/1

Y1 - 2013/1

N2 - A gasochromic Pt/V2O5 film was fabricated by the sol-gel process and it exhibited excellent color change performance from yellow to gray/black upon exposure to hydrogen gas under ambient conditions. X-ray absorption spectroscopy was employed to study the unoccupied electronic states in detail and to explore the gasochromic effect and its coloration mechanism. Upon injection of hydrogen, gashochromism was revealed to correlate strongly with the change of both electronic and atomic structures. Since the hydrogen supplied an extra electron, the hybridization between vanadium 3d and oxygen 2p was modified, reducing the valence state of vanadium from 5 + to 4.1 + . Linear polarized synchrotron X-rays were utilized to investigate the change in the structural symmetry and the orbital orientation. Along with the electronic structure, the geometric modulation of the VO6 octahedron is crucial to the gasochromic mechanism, as also revealed in this study.

AB - A gasochromic Pt/V2O5 film was fabricated by the sol-gel process and it exhibited excellent color change performance from yellow to gray/black upon exposure to hydrogen gas under ambient conditions. X-ray absorption spectroscopy was employed to study the unoccupied electronic states in detail and to explore the gasochromic effect and its coloration mechanism. Upon injection of hydrogen, gashochromism was revealed to correlate strongly with the change of both electronic and atomic structures. Since the hydrogen supplied an extra electron, the hybridization between vanadium 3d and oxygen 2p was modified, reducing the valence state of vanadium from 5 + to 4.1 + . Linear polarized synchrotron X-rays were utilized to investigate the change in the structural symmetry and the orbital orientation. Along with the electronic structure, the geometric modulation of the VO6 octahedron is crucial to the gasochromic mechanism, as also revealed in this study.

UR - http://www.scopus.com/inward/record.url?scp=84872971227&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872971227&partnerID=8YFLogxK

U2 - 10.1209/0295-5075/101/17006

DO - 10.1209/0295-5075/101/17006

M3 - Article

AN - SCOPUS:84872971227

VL - 101

JO - Europhysics Letters

JF - Europhysics Letters

SN - 0295-5075

IS - 1

M1 - 17006

ER -