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author:

Li, Yafeng (Li, Yafeng.) [1] | Zheng, Xiangzhen (Zheng, Xiangzhen.) [2] | Zhang, Huixing (Zhang, Huixing.) [3] | Guo, Binbin (Guo, Binbin.) [4] | Pang, Aiying (Pang, Aiying.) [5] | Wei, Mingdeng (Wei, Mingdeng.) [6]

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EI

Abstract:

The dye-sensitized Zn2SnO4 solar cells were treated with Al3+ ions to enhance the power conversion efficiency for the first time. Usually, the surface treatment on photoanodes with Al3+ ions generated an overlayer of Al2O3. For Zn 2SnO4 photoanode, another reaction pathway was found. The treatment with Al3+ ions led to decreasing open circuit voltage, and a 22.6% enhancement of efficiency. Mott-Schottky measurements revealed that the flat band of Zn2SnO4 had a positive shift owing to the introduction of Al3+ ions. XPS confirmed that Al3+ ions were introduced into the lattice of Zn2SnO4 and occupied the position of Sn4+, resulting in decreased conduction band edge. TEM demonstrated the size of Zn2SnO4 nanoparticles became larger due to the reaction of Al3+ with Zn2SnO 4. Although the adsorption amounts of dyes lowered by 21%, the driving force for electron injection was greatly enhanced as a result of decreased conduction band edge, resulting in significantly enhanced cell efficiency. © 2011 Elsevier Ltd. All rights reserved.

Keyword:

Alumina Aluminum oxide Conduction bands Dye-sensitized solar cells Efficiency Ions Open circuit voltage Solar power generation Surface treatment Tin compounds Zinc compounds

Community:

  • [ 1 ] [Li, Yafeng]Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 2 ] [Zheng, Xiangzhen]Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 3 ] [Zhang, Huixing]Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 4 ] [Guo, Binbin]Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 5 ] [Pang, Aiying]Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 6 ] [Wei, Mingdeng]Institute of New Energy Technology and Nano-Materials, Fuzhou University, Fuzhou, Fujian 350002, China

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Source :

Electrochimica Acta

ISSN: 0013-4686

Year: 2011

Issue: 25

Volume: 56

Page: 9257-9261

3 . 8 3 2

JCR@2011

5 . 5 0 0

JCR@2023

JCR Journal Grade:2

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 23

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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