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Photogalvanic Cells for Classroom Investigations: A Contribution for Ongoing Curriculum Modernization

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Claudia Bohrmann-Linde and Michael W. Tausch

Instiut für Chemie, Universität Duisburg, Duisburg, Germany

J. Chem. Educ., 2003, 80 (12), p 1471

DOI: 10.1021/ed080p1471

Publication Date (Web): December 1, 2003

Section:

History, Education, and Documentation

Abstract

Laboratory experiments examining the fundamental processes in the conversion of light into electrical energy using photogalvanic cells have been developed. The basic components of the photogalvanic cells are photoelectrodes, consisting of a thin layer of nanocrystalline TiO₂ (anatase) sintered on conductive glass; low-cost counter electrodes (platinized razor foils from electric razors); and different sacrificial donors in the electrolyte solution. These simple cells are suitable for classroom investigations examining the operating principles of photogalvanic cells and the influence of different parameters on their efficiency. With these experiments instructors can introduce topics of modern research and technology into the curriculum.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Curriculum

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Electrochemistry

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