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

Hong Ha Thi Vu; Timur Sh Atabaev; Ji Young Ahn; Nguyen Nang Dinh; Hyung Kook Kim; Yoon Hwae Hwang

doi:10.1039/c5ta02363g

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

Hong Ha Thi Vu, Timur Sh Atabaev, Ji Young Ahn, Nguyen Nang Dinh, Hyung Kook Kim, Yoon Hwae Hwang

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

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.

Original language	English
Pages (from-to)	11130-11136
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	20
DOIs	https://doi.org/10.1039/c5ta02363g
Publication status	Published - May 28 2015
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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10.1039/c5ta02363g

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Dye-sensitized solar cells composed of photoactive composite photoelectrodes with enhanced solar energy conversion efficiency. / Thi Vu, Hong Ha; Atabaev, Timur Sh; Ahn, Ji Young; Dinh, Nguyen Nang; Kim, Hyung Kook; Hwang, Yoon Hwae.

In: Journal of Materials Chemistry A, Vol. 3, No. 20, 28.05.2015, p. 11130-11136.

Research output: Contribution to journal › Article › peer-review

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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.",

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AU - Atabaev, Timur Sh

AU - Ahn, Ji Young

AU - Dinh, Nguyen Nang

AU - Kim, Hyung Kook

AU - Hwang, Yoon Hwae

PY - 2015/5/28

Y1 - 2015/5/28

N2 - 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.

AB - 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.

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