Columnar rutile TiO2 based dye-sensitized solar cells by radio-frequency magnetron sputtering

Soon Hyung Kang, Moon Sung Kang, Hyun Sik Kim, Jae Yup Kim, Young Hoon Chung, William H. Smyrl, Yung Eun Sung

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Columnar-structured rutile TiO2 film with a thickness of 1.4 μm is prepared using the radio-frequency (RF) magnetron sputtering technique, for application in dye-sensitized solar cells (DSSCs). Pure rutile TiO2 films are fabricated by controlling the substrate temperature during sputtering and using a substrate with a rough surface morphology. Successive substrate heating to 623 K induces the growth of a rutile TiO2 film that has a specific direction in the (1 1 0) plane, which results in a decrease in the average grain size. This causes in an increase of dye uptake and thereby contributes to enhancement of the photocurrent in the DSSC.

Original languageEnglish (US)
Pages (from-to)331-335
Number of pages5
JournalJournal of Power Sources
Volume184
Issue number1
DOIs
StatePublished - Sep 15 2008

Bibliographical note

Funding Information:
This work was supported in part by KOSEF (Contract No. R01-2004-000-10143-0), and in part by the Research Center for Energy Conversion and Storage (Contract No. R11-2002-102-00000-0).

Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.

Keywords

  • Columnar structure
  • Dye-sensitized solar cell
  • Photocurrent
  • Radio-frequency magnetron sputtering
  • Rutile TiO
  • Substrate heating

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