Highly efficient plastic-based quasi-solid-state dye-sensitized solar cells with light-harvesting mesoporous silica nanoparticles gel-electrolyte

Hsin Wei Chen, Ya Dong Chiang, Chung Wei Kung, Nobuya Sakai, Masashi Ikegami, Yusuke Yamauchi, Kevin C.W. Wu, Tsutomu Miyasaka, Kuo Chuan Ho

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

Abstract

A quasi-solid-state gel-electrolyte containing mesoporous silica nanoparticles (MSNs) capable of light-scattering is applied to plastic-based dye-sensitized solar cells (DSSCs). The MSNs based gel-electrolyte exhibits higher reflectance in the visible wavelength and contains nanometer-sized pores to facilitate the I-/I3- ion diffusion and increase the ionic conductivity of the gel-electrolyte. Linear sweep voltammetry (LSV) measurements and electrochemical impedance spectra (EIS) are used to substantiate the explanations. Optimization on both the wt% of MSNs and the I2 concentration (i.e., 10 wt% of MSNs and 0.02 M of I2) of the gel-electrolyte give the best cell performance with a light-to-electricity conversion efficiency (η) of 5.45% under illumination of 100 mW cm-2. A mechanism for enhanced efficiency is proposed regarding the role of MSNs.

Original languageEnglish
Pages (from-to)411-417
Number of pages7
JournalJournal of Power Sources
Volume245
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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