Efficiency improvement of dye-sensitized solar cells with surface-modified photoelectrodes

Ju Hee Oh, Hee Jin Kim, Dong Young Kim, Chul Gyun Hwang, Giseop Kwak, Yoon Soo Han

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A novel surface modifier, ethylenediamine tetraacetic acid tetrasodium salt (EDTNa), was incorporated on the surface of TiO2, and the resulting electrodes were applied to the photoanode of dye-sensitized solar cells (DSSCs). The DSSC with EDTNa-incorporated photoelectrode showed an increase in short-circuit current (Jsc) and open-circuit voltage (Voc), resulting in a 16.5% enhancement in power conversion efficiency, compared to that of reference cell without EDTNa. It was found that the presence of the bulky ethylenediamine tetraacetate moieties increases lifetime of electrons injected from dye molecules to TiO2, resulting from an effective prevention of direct contact between electrolyte ions and the Ti02 surface. This improvement of lifetime induced the enhancement in Jsc and Voc.

Original languageEnglish
Pages (from-to)1507-1510
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume15
Issue number2
DOIs
StatePublished - 1 Feb 2015

Keywords

  • Dye-sensitized solar cells
  • Electron lifetime
  • Photoelectrode
  • Surface modifier

Fingerprint

Dive into the research topics of 'Efficiency improvement of dye-sensitized solar cells with surface-modified photoelectrodes'. Together they form a unique fingerprint.

Cite this