Improved stability of unsealed quasi-solid-state dye-sensitized solar cell using poly(3,4-ethylenedioxythiophene) film as layer electrolyte

Suthida Vivekaphirat, Chaiyuth Sae-kung, San H. Thang, Atchana Wongchaisuwat, Marisa Arunchaiya

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)

Abstract

Quasi-solid/solid polymer electrolytes have been the subject of extensive research for an alternative of liquid electrolyte for dye-sensitized solar cells (DSSCs) because of their advantages such as alleviated leakage, lower environmental impact and ease of device fabrication. In this work, the performance of the unsealed quasi-solid-state DSSCs based on composite poly (ethylene oxide) (PEO) electrolyte and N719 dye-sensitizer was examined on aging under atmospheric condition. The energy conversion efficiency of DSSC using the composite PEO electrolyte was 5.62 % under sun simulated light, AM 1.5 (100 mW cm-2) but gradually decreased to 0.95 % on aging for 90 days. An additional layer of poly(3,4-ethylenedioxythiophene) (PEDOT) electrolyte was incorporated with the composite polymer electrolyte for DSSC fabrication. The PEDOT layer was prepared by electrochemical polymerization of bis-ethylenedioxythiophene (bis-EDOT) and characterized by Raman spectroscopy and cyclic voltammetry. It was found that the energy conversion efficiency of DSSC based on the composite polymer electrolyte incorporated with PEDOT layer was 5.57 % and gradually decreased to 1.76 % under the same aging condition. Thus an additional layer of PEDOT electrolyte provided an improved stability of DSSC.

Original languageEnglish
Title of host publicationMaterials Science Forum
Subtitle of host publicationOptoelectronic Materials
Pages852-856
Number of pages5
Volume663-665
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2010 International Conference on Optical, Electronic and Electrical Materials, OEEM2010 - Kunming, China
Duration: 1 Aug 20104 Aug 2010

Publication series

NameMaterials Science Forum
Volume663-665
ISSN (Print)02555476

Conference

Conference2010 International Conference on Optical, Electronic and Electrical Materials, OEEM2010
CountryChina
CityKunming
Period1/08/104/08/10

Keywords

  • Dye-sensitized solar cell
  • PEDOT
  • Quasi-solid-state polymer electrolyte

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