Three-dimensional networks of ITO/CdS coaxial nanofibers for photovoltaic applications

Jin, Ming-Jun, Ma, Teng, Ling, Tao, Qiao, Shi-Zhang and Du, Xi-Wen (2012) Three-dimensional networks of ITO/CdS coaxial nanofibers for photovoltaic applications. Journal of Materials Chemistry, 22 26: 13057-13063. doi:10.1039/c2jm32173d

Author Jin, Ming-Jun
Ma, Teng
Ling, Tao
Qiao, Shi-Zhang
Du, Xi-Wen
Title Three-dimensional networks of ITO/CdS coaxial nanofibers for photovoltaic applications
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
Publication date 2012-07-14
Year available 2012
Sub-type Article (original research)
DOI 10.1039/c2jm32173d
Open Access Status Not Open Access
Volume 22
Issue 26
Start page 13057
End page 13063
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2012
Language eng
Subject 2505 Materials Chemistry
1600 Chemistry
Abstract When serving as the electrode of semiconductor sensitized solar cells (SSSCs), conductive transparent nanofibers can enlarge the surface area and accelerate the electron transport, and can thus be expected to enhance the final power conversion efficiency of the device. Here we report the fabrication of three dimensional networks of indium tin oxide (ITO) nanofibers on a conductive glass substrate with a low sheet resistance of 15 Ω sq -1 by using an electrospinning technique. A post-treatment involving polyethylene glycol impregnation and calcination is developed to realize the excellent electrical contact of ITO nanofibers with the substrate, and maintain the fibrous morphology of the nanofibers also. Light-harvesting CdS nanocrystals are electrodeposited onto ITO nanofibers, and then the obtained ITO/CdS coaxial nanofibers are constructed into SSSCs. We find that the performance of this novel SSSC is remarkably improved compared with CdS nanocrystals directly deposited on a flat conductive substrate, and an unprecedented photocurrent density of 9.27 mA cm -2 is achieved under the illumination of one sun (AM1.5, 100 mW cm -2). Our work indicates that the special designation of three-dimensional coaxial nanofibers can pave a new avenue to efficient photovoltaic devices.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
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