Injected current-related distortion of photothermal signals from a photovoltaic cell

David Cahen; Per Erik Nordal; Svein Otto Kanstad

doi:10.1063/1.97375

Injected current-related distortion of photothermal signals from a photovoltaic cell

David Cahen, Per Erik Nordal, Svein Otto Kanstad

Research output: Contribution to journal › Article › peer-review

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Abstract

When power dissipation in a photovoltaic cell is measured as a function of load resistance via photothermal techniques which sense only part of the photovoltaic cell, significant deviations from previously reported photoacoustic measurements can be obtained. These deviations occur under nonuniform illumination. They are due to the fact that, under these experimental conditions, the measured signal is proportional to only part of the power dissipation by injected carriers, while all of the photogenerated carriers contribute to the signal. Results from photothermal radiometry experiments are presented and explained in this way.

Original language	English
Pages (from-to)	1351-1353
Number of pages	3
Journal	Applied Physics Letters
Volume	49
Issue number	20
DOIs	https://doi.org/10.1063/1.97375
State	Published - 1986
Externally published	Yes

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abstract = "When power dissipation in a photovoltaic cell is measured as a function of load resistance via photothermal techniques which sense only part of the photovoltaic cell, significant deviations from previously reported photoacoustic measurements can be obtained. These deviations occur under nonuniform illumination. They are due to the fact that, under these experimental conditions, the measured signal is proportional to only part of the power dissipation by injected carriers, while all of the photogenerated carriers contribute to the signal. Results from photothermal radiometry experiments are presented and explained in this way.",

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AB - When power dissipation in a photovoltaic cell is measured as a function of load resistance via photothermal techniques which sense only part of the photovoltaic cell, significant deviations from previously reported photoacoustic measurements can be obtained. These deviations occur under nonuniform illumination. They are due to the fact that, under these experimental conditions, the measured signal is proportional to only part of the power dissipation by injected carriers, while all of the photogenerated carriers contribute to the signal. Results from photothermal radiometry experiments are presented and explained in this way.

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Injected current-related distortion of photothermal signals from a photovoltaic cell

Abstract

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