PHOTOELECTROCHEMISTRY OF HIGHLY QUANTUM EFFICIENT SINGLE-CRYSTALLINE n-FeS//2 (PYRITE).

A. Ennaoui, S. Fiechter, W. Jaegermann, H. Tributsch

Research output: Contribution to journalArticle

269 Citations (Scopus)

Abstract

Monocrystalline n-FeS//2 (pyrite, E//g approximately equals 0. 95 ev) photoelectrodes with high photocurrent quantum efficiency ( greater than 90%) have been obtained by improvement of the solid-state and interfacial chemistry. During intensive illumination (4-5 W/cm**2), photocurrent densities between 1 and 2 A/cm**2 have been observed for single crystals with high electron mobility ( mu equals 180 cm**2-(V-s)** minus **1 in presence of the I** minus /I//3** minus redox couple. Under illumination, a charge of 623. 000 C/cm**2 was passed without evidence of photocorrosion. The influence of etching treatments, various redox systems, and organic electrolytes on the photochemistry of FeS//2 was investigated.

Original languageEnglish
Pages (from-to)97-106
Number of pages10
JournalJournal of the Electrochemical Society
Volume133
Issue number1
Publication statusPublished - Jan 1986
Externally publishedYes

Fingerprint

photoelectrochemistry
Photocurrents
photocurrents
Lighting
illumination
Crystalline materials
Electron mobility
Photochemical reactions
Pyrites
pyrites
Surface chemistry
Quantum efficiency
electron mobility
photochemical reactions
Electrolytes
quantum efficiency
Etching
etching
Single crystals
electrolytes

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

PHOTOELECTROCHEMISTRY OF HIGHLY QUANTUM EFFICIENT SINGLE-CRYSTALLINE n-FeS//2 (PYRITE). / Ennaoui, A.; Fiechter, S.; Jaegermann, W.; Tributsch, H.

In: Journal of the Electrochemical Society, Vol. 133, No. 1, 01.1986, p. 97-106.

Research output: Contribution to journalArticle

Ennaoui, A. ; Fiechter, S. ; Jaegermann, W. ; Tributsch, H. / PHOTOELECTROCHEMISTRY OF HIGHLY QUANTUM EFFICIENT SINGLE-CRYSTALLINE n-FeS//2 (PYRITE). In: Journal of the Electrochemical Society. 1986 ; Vol. 133, No. 1. pp. 97-106.
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