CeO2 quantum dot functionalized ZnO nanorods photoanode for DSSC applications

Prabhakar Rai, Rizwan Khan, Kyeong Jun Ko, Jong Heun Lee, Yeon Tae Yu

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Cerium oxide quantum dots (CeO2 QDs) decorated zinc oxide nanorods (ZnO NRs) heterostructures were grown by a combination of solvothermal and chemical bath deposition methods and used for dye sensitized solar cell (DSSC) applications. Transmission electron microscope images showed the formation of CeO2/ZnO NRs, where ~5 nm CeO2 QDs were decorated on ZnO NRs having 1-2.5 μm length and 100-150 nm width. Photoluminescence spectra showed the significant increase in UV emission after decoration of ZnO NRs with CeO2 QDs. DSSC results revealed that the ZnO NRs with CeO2 QDs leads to an increase in the open circuit voltage and fill factor and exhibited a maximum efficiency of 2.65 %, which was 2.01 times higher than that of unmodified ZnO NRs. The decoration of CeO 2 QDs on the ZnO NRs surface may lead to the formation of barrier layer and hindered the back electron transfer and thereby high light harvesting efficiency.

Original languageEnglish
Pages (from-to)2872-2877
Number of pages6
JournalJournal of Materials Science: Materials in Electronics
Volume25
Issue number7
DOIs
Publication statusPublished - 2014 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'CeO<sub>2</sub> quantum dot functionalized ZnO nanorods photoanode for DSSC applications'. Together they form a unique fingerprint.

Cite this