Apparatus and method for making surface photovoltage measurement

Details Apparatus and method for making surface photovoltage measurement Apparatus and method for making surface photovoltage measurement

1990-07-16

1992-02-11

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 731, 324158R, G01R 3126

Patent

active

050878760

ABSTRACT:
An apparatus for making ac surface photovoltage (SPV) measurements of a specimen of semiconductor material under variable dc bias voltage conditions includes a light source whose output beam is intensity modulated, a reference electrode, a guard electrode, a back electrode, a first voltage for biasing the reference electrode with a variable dc voltage and a second voltage separate from the first voltage for biasing the guard electrode such that an accumulation layer is established in the area on the specimen controlled by the guard electrode to prevent flow of carriers between the area controlled by the reference electrode and the rest of the specimen.

REFERENCES:
patent: 4544887 (1985-10-01), Kamieniecki
patent: 4827212 (1989-05-01), Kamieniecki
patent: 4891584 (1990-01-01), Kamieniecki et al.

Affiliated with

Also associated with

Rating

Apparatus and method for making surface photovoltage measurement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for making surface photovoltage measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for making surface photovoltage measurement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-783873