Electrodeposition of photoactive silicon films for low-cost solar cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Ji Zhao
  • Huayi Yin
  • Taeho Lim
  • Hongwei Xie
  • Fardad Forouzan
  • Allen J. Bard

Detail(s)

Original languageEnglish
Pages (from-to)D506-D514
Journal / PublicationJournal of the Electrochemical Society
Volume163
Issue number9
Publication statusPublished - 2016
Externally publishedYes

Abstract

Here we demonstrate progress on electrodeposition of photoactive silicon films from an environmentally friendly molten CaCl2 electrolyte, which is the first step of a new route to a practical low-cost silicon solar cell. We report electrodeposition of severalmicron thick silicon films on a graphite substrate in a bath of molten CaCl2 containing SiO2 nanoparticles. The best silicon deposits was obtained at 6 mA/cm2 for 1 hour in molten CaCl2 containing 0.3 M SiO2 nanoparticles, at 850° C. The main impurities are Al, Mg, Ca, Na. A photoelectrochemical method was demonstrated as a reliable and sensitive measurement for testing the quality of the silicon film. The as-deposited film exhibits 31% of the photocurrent response of a commercial p-type wafer. A comparison of graphite and silver substrates is presented, and the remaining problems are discussed.

Citation Format(s)

Electrodeposition of photoactive silicon films for low-cost solar cells. / Zhao, Ji; Yin, Huayi; Lim, Taeho; Xie, Hongwei; Hsu, Hsien-Yi; Forouzan, Fardad; Bard, Allen J.

In: Journal of the Electrochemical Society, Vol. 163, No. 9, 2016, p. D506-D514.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review