Improvement of nonlinear response for the power conversion efficiency with light intensities in cobalt complex electrolyte system

Yong Hui Lee, Jin Hyuck Heo, Sang Hyuk Im, Hi Jung Kim, Choong Sun Lim, Tae Kyu Ahn, Sang Il Seok

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A vertically aligned TiO2 photoelectrode with sufficient space between TiO2 nanorods was synthesized by sacrificial templating of ZnO nanorods grown on a dense TiO2 layer/FTO film. The more expanded pore space in the TiO2 nanorod film than conventional mesoscopic TiO2 film greatly reduces the mass transport problem of cobalt electrolyte in the vicinity of the Sb2S3 sensitizer in Sb2S3-sensitized photoelectrochemical solar cells. Therefore, the nonlinearity of the power conversion efficiency (PCE) under illumination intensity was greatly relieved to 5.0% (0.1 sun), 4.7% (0.5 sun), and 3.7% (1 sun) in a TiO2-nanorod-based Sb2S 3-sensitized solar cell, whereas the efficiency of a mesoscopic-TiO2-based solar cell was significantly degraded to 5.3% (0.1 sun), 3.8% (0.5 sun), and 2.3% (1 sun).

Original languageEnglish
Pages (from-to)63-69
Number of pages7
JournalChemical Physics Letters
Volume573
DOIs
Publication statusPublished - 2013 Jun 6
Externally publishedYes

Fingerprint

Cobalt
Sun
luminous intensity
Electrolytes
Conversion efficiency
sun
cobalt
electrolytes
Nanorods
nanorods
Solar cells
solar cells
Mass transfer
Lighting
illumination
nonlinearity
porosity

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Improvement of nonlinear response for the power conversion efficiency with light intensities in cobalt complex electrolyte system. / Lee, Yong Hui; Heo, Jin Hyuck; Im, Sang Hyuk; Kim, Hi Jung; Lim, Choong Sun; Ahn, Tae Kyu; Seok, Sang Il.

In: Chemical Physics Letters, Vol. 573, 06.06.2013, p. 63-69.

Research output: Contribution to journalArticle

Lee, Yong Hui ; Heo, Jin Hyuck ; Im, Sang Hyuk ; Kim, Hi Jung ; Lim, Choong Sun ; Ahn, Tae Kyu ; Seok, Sang Il. / Improvement of nonlinear response for the power conversion efficiency with light intensities in cobalt complex electrolyte system. In: Chemical Physics Letters. 2013 ; Vol. 573. pp. 63-69.
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AU - Ahn, Tae Kyu

AU - Seok, Sang Il

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