Title :
Large linear area light-spot-position-sensitive photodiode
Author :
Fieret, J. ; Kwakernaak, A. ; Middelhoek, S.
Author_Institution :
Delft University of Technology, Electrical Materials Laboratory, Department of Electrical Engineering, Delft, Netherlands
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 :
photodiodes; position measurement; 6 x 6 mm2 linear area; 9.4 x 9.3 mm2 photodiode; characteristics; contact pairs; lateral photoeffect; light intensity independence; light spot position sensitive photodiode; peripheral ohmic contacts; position measurement; x and y signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770307
