Large linear area light-spot-position-sensitive photodiode

7 July 1977

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 13 (14) , 422-424
https://doi.org/10.1049/el:19770307

Abstract

The influence of the place and the number of the peripheral ohmic contacts on the characteristics of a light-spot-position-sensitive photodiode based on the lateral photoeffect is investigated. Using contact pairs, a 9·3×9·3 mm² photodiode shows a 6×6 mm² linear area in which the x- and y-signals unambiguously depend on the co-ordinates. An extra contact ring makes it possible to make the cell light-intensity independent.

Keywords

POSITION MEASUREMENT
PERIPHERAL OHMIC CONTACTS
CHARACTERISTICS
LIGHT SPOT POSITION SENSITIVE PHOTODIODE
X AND Y SIGNALS
LIGHT INTENSITY INDEPENDENCE
CONTACT PAIRS
9.4 X 9.3 MM2 PHOTODIODE
LATERAL PHOTOEFFECT
6 X 6 MM2 LINEAR AREA

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