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Nano Research

, Volume 9, Issue 8, pp 2338–2346 | Cite as

Pt/Y2O3:Eu3+ composite nanotubes: Enhanced photoluminescence and application in dye-sensitized solar cells

  • Mingqi Yu
  • Jiamin Su
  • Guofeng WangEmail author
  • Yadong Li
Research Article

Abstract

Y(OH)3:Eu3+ nanotubes were synthesized using a facile hydrothermal method, and then, Pt particles were grown on the surface of the nanotubes using a combination of vacuum extraction and annealing. The resulting Pt/Y2O3:Eu3+ composite nanotubes not only exhibited enhanced red luminescence under 255- or 468-nm excitation but could also be used to improve the efficiency of dye-sensitized solar cells, resulting in an efficiency of 8.33%, which represents a significant enhancement of 11.96% compared with a solar cell without the composite nanotubes. Electrochemical impedance spectroscopy results indicated that the interfacial resistance of the TiO2–dye|I 3 /I electrolyte interface of the TiO2–Pt/Y2O3:Eu3+ composite cell was much smaller than that of a pure TiO2 cell. In addition, the TiO2–Pt/Y2O3:Eu3+ composite cell exhibited a shorter electron transport time and longer electron recombination time than the pure TiO2 cell.

Keywords

Pt/Y2O3:Eu3+ nanocrystals luminescence dye-sensitized solar cells 

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials ScienceHeilongjiang UniversityHarbinChina
  2. 2.Department of ChemistryTsinghua UniversityBeijingChina

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