Synthesis and characterization of Er3+-Yb3+ doped ZnO upconversion nanoparticles for solar cell application

Vinod Kumar, Anurag Pandey, Sanjay Kumar Swami, O. M. Ntwaeaborwa, H. C. Swart, Viresh Dutta

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Erbium (Er3+) and ytterbium (Yb3+) co-doped ZnO upconversion (UC) nanoparticles based phosphors are synthesized by solution-combustion method. These UC phosphors are shown a strong UC emissions at red, green and blue wavelengths with the excitation of 980 nm diode laser source. To understand the influence of ZnO:Er3+-Yb3+ UC based nanoparticles on the performance of dye sensitized solar cells (DSSCs), the UC nanoparticles are incorporated into scattering layer of titanium dioxide films in the form of composite photoanode. The power conversion efficiency (PCE) of the DSSCs is increased from 8.34 to 8.72% after incorporation of ZnO:Er3+-Yb3+ upconverting nanoparticles. This enhancement in the PCE is due to increase in the short circuit current density (JSC) of 18.66 mA cm−2. The enhancement in the Jsc is due to the infrared light harvesting from infrared into the visible region, while the PCE of reference DSSC (without up conversion layer) is obtained 8.34% with the JSC of 17.89 mA cm−2.

Original languageEnglish
Pages (from-to)429-435
Number of pages7
JournalJournal of Alloys and Compounds
Volume766
DOIs
StatePublished - 25 Oct 2018
Externally publishedYes

Keywords

  • Dye sensitized solar cells
  • Light harvesting
  • Up conversion nanoparticles
  • ZnO nanoparticles

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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