Hierarchically assembled nanostructures and their photovoltaic properties

Baurzhan Ilyassov, Niyazbek Ibrayev, Nurxat Nuraje

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Abstract In this study, the effect of morphology and defect density of ZnO nanostructures on photovoltaic performance and electron transport properties of Dye-sensitized solar cells (DSSCs) have been investigated by using highly stable electrolytes which consist of high boiling organic solvents and a mixture of ionic liquids with relatively low viscosity. Two different ZnO nanoarrays with rod and sheet morphologies were fabricated and assembled for photovoltaic and electron transport study of the DSSCs. A photoluminescence spectra study indicated that nanosheets had more defect density compared to nanorods, which resulted in a lower open circuit photovoltage. Electrochemical impedance spectroscopy (EIS) and dye absorption amount analysis further explained the high short-circuit current density (Jsc) of the DSSC with ZnO nanosheet structure based on the dye-loading amount, effective electron lifetime and electron density.

Original languageEnglish
Pages (from-to)885-889
Number of pages5
JournalMaterials Science in Semiconductor Processing
Volume40
DOIs
Publication statusPublished - 11 Aug 2015
Externally publishedYes

Keywords

  • DSSCs
  • Dye-sensitized solar cell
  • Electrochemical impedance spectroscopy
  • Photoluminescence
  • Photovoltaic
  • Zinc oxide nanomaterials

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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