Conductive upconversion Er,Yb-FTO nanoparticle coating to replace Pt as a low-cost and high-performance counter electrode for dye-sensitized solar cells

Liang Li; Yulin Yang; Ruiqing Fan; Shuo Chen; Ping Wang; Bin Yang; Wenwu Cao

doi:10.1021/am5009776

Conductive upconversion Er,Yb-FTO nanoparticle coating to replace Pt as a low-cost and high-performance counter electrode for dye-sensitized solar cells

Liang Li, Yulin Yang, Ruiqing Fan, Shuo Chen, Ping Wang, Bin Yang, Wenwu Cao

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

29 Scopus citations

Abstract

F-doped SnO₂ (FTO) nanocrystals modified by Er and Yb with upconversion capability and excellent catalytic properties have been designed and fabricated as an economic replacement for Pt for use as the counter electrode (CE) in dye-sensitized solar cells. The cost of the UC-FTO counter electrode is only ∼¹/₂₀th of that for Pt. The upconverted luminescence-mediated energy transfer and the superior catalytic property for I₃^-/I^- circulation overpowered the slight degradation caused by increased CE/electrolyte interface resistance. A 23.9% enhancement in photocurrent was achieved with little degradation in photovoltage, resulting in a 9.12% increase in solar-to-electric power conversion efficiency. Near-infrared (NIR) light-to-electricity has been directly observed by SPS and IPCE characterizations, showing the effect of the upconversion counter electrode.

Original language	English (US)
Pages (from-to)	8223-8229
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	11
DOIs	https://doi.org/10.1021/am5009776
State	Published - Jun 11 2014

All Science Journal Classification (ASJC) codes

General Materials Science

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10.1021/am5009776

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title = "Conductive upconversion Er,Yb-FTO nanoparticle coating to replace Pt as a low-cost and high-performance counter electrode for dye-sensitized solar cells",

abstract = "F-doped SnO2 (FTO) nanocrystals modified by Er and Yb with upconversion capability and excellent catalytic properties have been designed and fabricated as an economic replacement for Pt for use as the counter electrode (CE) in dye-sensitized solar cells. The cost of the UC-FTO counter electrode is only ∼1/20th of that for Pt. The upconverted luminescence-mediated energy transfer and the superior catalytic property for I3-/I- circulation overpowered the slight degradation caused by increased CE/electrolyte interface resistance. A 23.9% enhancement in photocurrent was achieved with little degradation in photovoltage, resulting in a 9.12% increase in solar-to-electric power conversion efficiency. Near-infrared (NIR) light-to-electricity has been directly observed by SPS and IPCE characterizations, showing the effect of the upconversion counter electrode.",

author = "Liang Li and Yulin Yang and Ruiqing Fan and Shuo Chen and Ping Wang and Bin Yang and Wenwu Cao",

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AU - Li, Liang

AU - Yang, Yulin

AU - Fan, Ruiqing

AU - Chen, Shuo

AU - Wang, Ping

AU - Yang, Bin

AU - Cao, Wenwu

PY - 2014/6/11

Y1 - 2014/6/11

N2 - F-doped SnO2 (FTO) nanocrystals modified by Er and Yb with upconversion capability and excellent catalytic properties have been designed and fabricated as an economic replacement for Pt for use as the counter electrode (CE) in dye-sensitized solar cells. The cost of the UC-FTO counter electrode is only ∼1/20th of that for Pt. The upconverted luminescence-mediated energy transfer and the superior catalytic property for I3-/I- circulation overpowered the slight degradation caused by increased CE/electrolyte interface resistance. A 23.9% enhancement in photocurrent was achieved with little degradation in photovoltage, resulting in a 9.12% increase in solar-to-electric power conversion efficiency. Near-infrared (NIR) light-to-electricity has been directly observed by SPS and IPCE characterizations, showing the effect of the upconversion counter electrode.

AB - F-doped SnO2 (FTO) nanocrystals modified by Er and Yb with upconversion capability and excellent catalytic properties have been designed and fabricated as an economic replacement for Pt for use as the counter electrode (CE) in dye-sensitized solar cells. The cost of the UC-FTO counter electrode is only ∼1/20th of that for Pt. The upconverted luminescence-mediated energy transfer and the superior catalytic property for I3-/I- circulation overpowered the slight degradation caused by increased CE/electrolyte interface resistance. A 23.9% enhancement in photocurrent was achieved with little degradation in photovoltage, resulting in a 9.12% increase in solar-to-electric power conversion efficiency. Near-infrared (NIR) light-to-electricity has been directly observed by SPS and IPCE characterizations, showing the effect of the upconversion counter electrode.

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Conductive upconversion Er,Yb-FTO nanoparticle coating to replace Pt as a low-cost and high-performance counter electrode for dye-sensitized solar cells

Abstract

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