Improvement in light harvesting and device performance of dye sensitized solar cells using electrophoretic deposited hollow TiO2 NPs scattering layer

Chava Rama Krishna; Woo Min Lee; Sang Yeob Oh; Kwang Un Jeong; Yeon Tae Yu

doi:10.1016/j.solmat.2016.11.037

Improvement in light harvesting and device performance of dye sensitized solar cells using electrophoretic deposited hollow TiO₂ NPs scattering layer

Chava Rama Krishna
, Woo Min Lee
, Sang Yeob Oh
, Kwang Un Jeong
, Yeon Tae Yu^*

^*Corresponding author for this work

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

36 Scopus citations

Abstract

The concept of bi-layer structure in photoanodes is of great importance to prepare highly efficient dye-sensitized solar cells. In this work, Hollow TiO₂ (H-TiO₂) NPs are successfully produced through the etching of Au NPs in Au@TiO₂ core-shell NPs which were synthesized by microwave hydrothermal route. Electrophoretic deposition was utilized to make H-TiO₂ NP scattering layer on the top of small sized TiO₂ NPs layer. The photoanodes based on H-TiO₂ NPs scattering layer showed a photoconversion efficiency of 7.58% which is much higher than that of photoanode without H-TiO₂ scattering layer (6.08%). The improved photovoltaic performance is mainly due to relatively light scattering effect, more surface area for effective dye adsorption and increased light harvesting capacity of H-TiO₂ NPs in the entire spectral range.

Original language	English
Pages (from-to)	255-262
Number of pages	8
Journal	Solar Energy Materials and Solar Cells
Volume	161
DOIs	https://doi.org/10.1016/j.solmat.2016.11.037
State	Published - 2017.03.1

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Bi-layer structure
Dye sensitized solar cells
Electrophoretic deposition
Hollow TiO Nanoparticles
Light harvesting

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Electrical & Electronic

Access to Document

10.1016/j.solmat.2016.11.037

Cite this

@article{f2768eebd9c34231a1d0bcc1122c7cca,

title = "Improvement in light harvesting and device performance of dye sensitized solar cells using electrophoretic deposited hollow TiO2 NPs scattering layer",

abstract = "The concept of bi-layer structure in photoanodes is of great importance to prepare highly efficient dye-sensitized solar cells. In this work, Hollow TiO2 (H-TiO2) NPs are successfully produced through the etching of Au NPs in Au@TiO2 core-shell NPs which were synthesized by microwave hydrothermal route. Electrophoretic deposition was utilized to make H-TiO2 NP scattering layer on the top of small sized TiO2 NPs layer. The photoanodes based on H-TiO2 NPs scattering layer showed a photoconversion efficiency of 7.58\% which is much higher than that of photoanode without H-TiO2 scattering layer (6.08\%). The improved photovoltaic performance is mainly due to relatively light scattering effect, more surface area for effective dye adsorption and increased light harvesting capacity of H-TiO2 NPs in the entire spectral range.",

keywords = "Bi-layer structure, Dye sensitized solar cells, Electrophoretic deposition, Hollow TiO Nanoparticles, Light harvesting",

author = "\{Rama Krishna\}, Chava and Lee, \{Woo Min\} and Oh, \{Sang Yeob\} and Jeong, \{Kwang Un\} and Yu, \{Yeon Tae\}",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2017",

month = mar,

day = "1",

doi = "10.1016/j.solmat.2016.11.037",

language = "English",

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journal = "Solar Energy Materials and Solar Cells",

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T1 - Improvement in light harvesting and device performance of dye sensitized solar cells using electrophoretic deposited hollow TiO2 NPs scattering layer

AU - Rama Krishna, Chava

AU - Lee, Woo Min

AU - Oh, Sang Yeob

AU - Jeong, Kwang Un

AU - Yu, Yeon Tae

PY - 2017/3/1

Y1 - 2017/3/1

N2 - The concept of bi-layer structure in photoanodes is of great importance to prepare highly efficient dye-sensitized solar cells. In this work, Hollow TiO2 (H-TiO2) NPs are successfully produced through the etching of Au NPs in Au@TiO2 core-shell NPs which were synthesized by microwave hydrothermal route. Electrophoretic deposition was utilized to make H-TiO2 NP scattering layer on the top of small sized TiO2 NPs layer. The photoanodes based on H-TiO2 NPs scattering layer showed a photoconversion efficiency of 7.58% which is much higher than that of photoanode without H-TiO2 scattering layer (6.08%). The improved photovoltaic performance is mainly due to relatively light scattering effect, more surface area for effective dye adsorption and increased light harvesting capacity of H-TiO2 NPs in the entire spectral range.

AB - The concept of bi-layer structure in photoanodes is of great importance to prepare highly efficient dye-sensitized solar cells. In this work, Hollow TiO2 (H-TiO2) NPs are successfully produced through the etching of Au NPs in Au@TiO2 core-shell NPs which were synthesized by microwave hydrothermal route. Electrophoretic deposition was utilized to make H-TiO2 NP scattering layer on the top of small sized TiO2 NPs layer. The photoanodes based on H-TiO2 NPs scattering layer showed a photoconversion efficiency of 7.58% which is much higher than that of photoanode without H-TiO2 scattering layer (6.08%). The improved photovoltaic performance is mainly due to relatively light scattering effect, more surface area for effective dye adsorption and increased light harvesting capacity of H-TiO2 NPs in the entire spectral range.

KW - Bi-layer structure

KW - Dye sensitized solar cells

KW - Electrophoretic deposition

KW - Hollow TiO Nanoparticles

KW - Light harvesting

UR - https://www.scopus.com/pages/publications/85004072405

U2 - 10.1016/j.solmat.2016.11.037

DO - 10.1016/j.solmat.2016.11.037

M3 - Journal article

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SN - 0927-0248

VL - 161

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EP - 262

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

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