Improved performance of dye-sensitized solar cells using dual-function TiO2 nanowire photoelectrode

Zico Alaia Akbar; Ji Hye Oh; Wisnu Tantyo Hadmojo; Su Ji Yang; Young Rag Do; Sung Yeong Jang

doi:10.1364/OE.23.0A1280

Improved performance of dye-sensitized solar cells using dual-function TiO₂ nanowire photoelectrode

Zico Alaia Akbar, Ji Hye Oh, Wisnu Tantyo Hadmojo, Su Ji Yang, Young Rag Do, Sung Yeong Jang

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

4 Scopus citations

Abstract

A unique, hierarchically structured, aggregated TiO₂ nanowire (A-TiO₂-nw) is prepared by solvothermal synthesis and used as a dualfunctioning photoelectrode in dye-sensitized solar cells (DSSCs). The A-TiO₂- nw shows improved light scattering compared to conventional TiO₂ nanoparticles (TiO₂-np) and dramatically enhanced dye adsorption compared to conventional scattering particles (CSP). The A-TiO₂-nw is used as a scattering layer for bilayer photoelectrodes (TiO₂-np/A-TiO₂-nw) in DSSCs to compare the cell performance to that of devices using state-ofthe- Art photoelectrode architectures (TiO₂-np/CSP). The DSSCs fabricated using bilayers of TiO₂-np/A-TiO₂-nw show improved power conversion efficiency (9.1%) and current density (14.88 mA cm^-2) compared to those using single-layer TiO₂-np (7.6% and 11.84 mA cm^-2) or TiO₂-np/CSP bilayer structures (8.7% and 13.81 mA cm^-2). The unique contribution of the A-TiO₂-nw layers to the device performance is confirmed by studying the incident photon-to-current efficiency. The enhanced external quantum efficiencies at approximately 520 nm and 650 nm clearly reveal the dual functionality of A-TiO₂-nw. These unique properties of A-TiO₂-nw may be applied in other devices utilizing light-scattering n-type semiconductor.

Original language	English (US)
Pages (from-to)	A1280-A1287
Journal	Optics Express
Volume	23
Issue number	19
DOIs	https://doi.org/10.1364/OE.23.0A1280
State	Published - 2015

Bibliographical note

Publisher Copyright:
©2015 Optical Society of America.

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1364/OE.23.0A1280

Cite this

@article{6c379f6590154f2387ff50a4589e316d,

title = "Improved performance of dye-sensitized solar cells using dual-function TiO2 nanowire photoelectrode",

abstract = "A unique, hierarchically structured, aggregated TiO2 nanowire (A-TiO2-nw) is prepared by solvothermal synthesis and used as a dualfunctioning photoelectrode in dye-sensitized solar cells (DSSCs). The A-TiO2- nw shows improved light scattering compared to conventional TiO2 nanoparticles (TiO2-np) and dramatically enhanced dye adsorption compared to conventional scattering particles (CSP). The A-TiO2-nw is used as a scattering layer for bilayer photoelectrodes (TiO2-np/A-TiO2-nw) in DSSCs to compare the cell performance to that of devices using state-ofthe- Art photoelectrode architectures (TiO2-np/CSP). The DSSCs fabricated using bilayers of TiO2-np/A-TiO2-nw show improved power conversion efficiency (9.1%) and current density (14.88 mA cm-2) compared to those using single-layer TiO2-np (7.6% and 11.84 mA cm-2) or TiO2-np/CSP bilayer structures (8.7% and 13.81 mA cm-2). The unique contribution of the A-TiO2-nw layers to the device performance is confirmed by studying the incident photon-to-current efficiency. The enhanced external quantum efficiencies at approximately 520 nm and 650 nm clearly reveal the dual functionality of A-TiO2-nw. These unique properties of A-TiO2-nw may be applied in other devices utilizing light-scattering n-type semiconductor.",

author = "Akbar, {Zico Alaia} and Oh, {Ji Hye} and Hadmojo, {Wisnu Tantyo} and Yang, {Su Ji} and Do, {Young Rag} and Jang, {Sung Yeong}",

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AU - Akbar, Zico Alaia

AU - Oh, Ji Hye

AU - Hadmojo, Wisnu Tantyo

AU - Yang, Su Ji

AU - Do, Young Rag

AU - Jang, Sung Yeong

PY - 2015

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