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Research Papers

A Study on Characteristics of Dye-Sensitized Solar Cells With Plasma-Treated TiO2 Films as a Function of Dye-Adsorption Time

[+] Author and Article Information
Myoung Kim

Convergence Components & Materials
Research Laboratory,
Electronics and Telecommunications
Research Institute (ETRI),
Daejeon 305-700, Republic of Korea;
School of Advanced Materials Engineering
and Research Center for Advanced Materials
Development (RCAMD),
Chonbuk National University,
Chonju 561-756, Republic of Korea

In-Hwan Lee

School of Advanced Materials Engineering
and Research Center for Advanced Materials
Development (RCAMD),
Chonbuk National University,
Chonju 561-756, Republic of Korea

Ho-Gyeong Yun

e-mail: yunhg@etri.re.kr
Convergence Components & Materials
Research Laboratory,
Electronics and Telecommunications Research
Institute (ETRI),
Daejeon 305-700, Republic of Korea

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the Journal of Solar Energy Engineering. Manuscript received February 18, 2012; final manuscript received July 24, 2012; published online September 6, 2012. Assoc. Editor: Santiago Silvestre.

J. Sol. Energy Eng 135(1), 011014 (Sep 06, 2012) (4 pages) Paper No: SOL-12-1043; doi: 10.1115/1.4007296 History: Received February 18, 2012; Revised July 24, 2012

We investigated the performance of dye-sensitized solar cells (DSSCs) with plasma-treated TiO2 films (P-DSSCs) as a function of dye-adsorption time. Enhanced hydrophilicity of the plasma-treated TiO2 films stimulated the dye-adsorption reaction in the initial stages and as a result the P-DSSCs exhibited superior performance compared to that of DSSCs with nontreated TiO2 films (N-DSSCs). Although the N-DSSCs and the P-DSSCs simultaneously deteriorated due to dye-aggregation after the optimal dye-adsorption time (10 h), the P-DSSCs maintained the superior performance to that of the N-DSSCs irrespective of the dye-adsorption time.

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Figures

Grahic Jump Location
Fig. 1

Contact angle images of (a) FTO glass, (b) nontreated TiO2, and (c) oxygen plasma-treated TiO2 films

Grahic Jump Location
Fig. 2

UV–vis absorption spectra of dye-adsorbed nontreated (dashed line) and oxygen plasma-treated (solid line) TiO2 films

Grahic Jump Location
Fig. 3

Comparative J–V curves between the N-DSSCs and the P-DSSCs for 10 h of dye-adsorption time

Grahic Jump Location
Fig. 4

(a) IPCE spectra and (b) open-circuit voltage decay measurement of the P-DSSCs and N-DSSCs with various dye-adsorption times

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