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Array of solid-state dye-sensitized solar cells with micropatterned TiO2 nanoparticles for a high-voltage power source

Seong-Min Cho1, Hea-Lim Park1, Min-Hoi Kim2, Se-Um Kim1 and Sin-Doo Lee1*

Author Affiliations

1 School of Electrical Engineering, Seoul National University, Kwanak, PO Box 34, Seoul 151-600, South Korea

2 School of Global Convergence Studies, Hanbat National University, 125 Dongseodaero, Yuseong-gu, Daejeon 305-719, South Korea

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Nanoscale Research Letters 2013, 8:491  doi:10.1186/1556-276X-8-491

Published: 20 November 2013


We demonstrate an array of solid-state dye-sensitized solar cells (SS-DSSCs) for a high-voltage power source based on micropatterned titanium dioxide nanoparticles (TNPs) as photoanodes connected in series. The underlying concept of patterning the TNP of a few micrometers thick lies on the combination of the lift-off process of transfer-printed patterns of a sacrificial layer and the soft-cure treatment of the TNP for fixation. This sacrificial layer approach allows for high pattern fidelity and stability, and it enables to construct stable, micrometer-thick, and contamination-free TNP patterns for developing the SS-DSSC array for miniature high-voltage applications. The array of 20 SS-DSSCs integrated in series is found to show a voltage output of around 7 V.

Titanium dioxide nanoparticle; Micropatterning; Solid-state dye-sensitized solar cell; High-voltage source; 81.16.Rf; 85.40.Hp; 84.60.Jt