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ERIC Number: EJ825957
Record Type: Journal
Publication Date: 2009-Jan
Pages: 8
Abstractor: As Provided
Reference Count: 13
ISSN: ISSN-0143-0807
A Laboratory Experiment to Measure the Built-In Potential of a P-N Junction by a Photosaturation Method
Ikram, I. Mohamed; Rabinal, M. K.; Mulimani, B. G.
European Journal of Physics, v30 n1 p127-134 Jan 2009
Here, we propose a simple method for measuring the built-in potential and its temperature dependence of a photodiode by a photosaturation technique. The experimental design facilitates both current-voltage and null voltage measurements as a function of white light intensity. This method gives the built-in potential directly; as a result its temperature dependence can conveniently be measured by using commercial photodiodes. The values obtained are quite close to the expected ones. Therefore, the technique can easily be adopted as a laboratory experiment in graduate/undergraduate courses to measure the built-in potential. (Contains 5 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: Students; Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A