Analysis of current loss from a series-parallel combination of dye-sensitized solar cells using electrochemical impedance spectroscopy

Hyunwoong Seo, Min Kyu Son, Jin Kyoung Kim, Jinho Choi, Seokwon Choi, Soo Kyoung Kim, Hee Je Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Dye-sensitized solar cells (DSCs) have been proposed as a substitute for silicon crystalline solar cells which have a high manufacturing cost but it is still difficult to fabricate highly efficient DSC module assemblies. Therefore, in this work, an externally connected module assembly was investigated for industrial applications of DSCs. The equivalent circuit of a DSC was determined using typical electrical components and the cause of a current loss in the parallel connection was analyzed using electrochemical impedance spectroscopy. Also, an externally connected module has been constructed using 50 DSCs, where each cell has an active area of 8 cm2 (4.62 cm × 1.73 cm) and a conversion efficiency of 4.21% under 1 sun illumination (Pin of 100 mW/cm2). As a result, the externally connected DSC module assembly has an output of 7.4 V and 200 mA, and shows stable performance, with an energy conversion efficiency of 4.44% under 0.45 sun illuminations.

Original languageEnglish
Pages (from-to)568-574
Number of pages7
JournalPhotonics and Nanostructures - Fundamentals and Applications
Volume10
Issue number4
DOIs
Publication statusPublished - Oct 1 2012

All Science Journal Classification (ASJC) codes

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

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