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

doi:10.1016/j.cplett.2013.04.047

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 journal › Article › peer-review

7 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 language	English
Pages (from-to)	63-69
Number of pages	7
Journal	Chemical Physics Letters
Volume	573
DOIs	https://doi.org/10.1016/j.cplett.2013.04.047
Publication status	Published - 2013 Jun 6
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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

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).",

author = "Lee, {Yong Hui} and Heo, {Jin Hyuck} and Im, {Sang Hyuk} and Kim, {Hi Jung} and Lim, {Choong Sun} and Ahn, {Tae Kyu} and Seok, {Sang Il}",

year = "2013",

month = jun,

day = "6",

doi = "10.1016/j.cplett.2013.04.047",

language = "English",

volume = "573",

pages = "63--69",

journal = "Chemical Physics Letters",

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T1 - Improvement of nonlinear response for the power conversion efficiency with light intensities in cobalt complex electrolyte system

AU - Lee, Yong Hui

AU - Heo, Jin Hyuck

AU - Im, Sang Hyuk

AU - Kim, Hi Jung

AU - Lim, Choong Sun

AU - Ahn, Tae Kyu

AU - Seok, Sang Il

PY - 2013/6/6

Y1 - 2013/6/6

N2 - 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).

AB - 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).

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