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Dye-sensitized solar cells composed of photoactive composite photoelectrodes with enhanced solar energy conversion efficiency

Vu, Thi Hong Ha and Timur, Sh. Atabaev and Ji, Young Ahn and Nguyen, Nang Dinh and Hyung, Kook Kim and Yoon, Hwae Hwang (2015) Dye-sensitized solar cells composed of photoactive composite photoelectrodes with enhanced solar energy conversion efficiency. J. Mater. Chem. A, 3 . pp. 11130-11136.

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Official URL: DOI: 10.1039/C5TA02363G

Abstract

Phosphor particles were introduced as a luminescent medium to improve the overall efficiency of dye sensitized solar cells (DSSCs). In the preparation process, TiO2 and phosphor particles were mixed to make photoelectrodes with bilayer (TiO2/mix), 3-layer (TiO2/mix/TiO2) and 4-layer (TiO2/mix/TiO2/mix) structures. The cell with the bilayer structure (TiO2/mix) after treating with TiCl4 solution showed the highest light-to-electric energy conversion efficiency (8.78%), which was ∼25.8% higher than that of a cell with a pure TiO2 layer under the same experimental conditions. The improvement in the energy conversion efficiency of DSSCs was attributed to phosphor enhanced incident light-harvesting via up- and down-conversion luminescence processes, resulting in an increase in the photocurrent.

Item Type: Article
Subjects: Engineering Physics
Divisions: Faculty of Engineering Physics and Nanotechnology (FEPN)
Depositing User: Ms. Cam Le Tran Thi
Date Deposited: 18 Jul 2016 03:20
Last Modified: 18 Jul 2016 03:21
URI: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/1801

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