Lateral thermal diffusion effects on photothermal signals from photovoltaic cells

Bettine Büchner, Norberto Cella, David Cahen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Thermal diffusion, parallel to the photovoltaic junction and perpendicular to the direction of illumination, can be used to separate the contributions of injected and photogenerated carriers to the generation of heat in a photothermal experiment, and to demonstrate the influence of electronic carrier diffusion on the signal, already at relatively low modulation frequencies. We show this by using an experimental arrangement in which the distance is varied between the illuminated area of the photovoltaic cell and that over which the thermal signal is detected, and the two areas do not overlap. Our results agree with theoretical calculations used to simulate the photothermal responses of solar cells.

Original languageEnglish
Pages (from-to)223-229
Number of pages7
JournalIsrael Journal of Chemistry
Issue number3
StatePublished - 1998
Externally publishedYes


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