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Image Sensor Arrays with Organic Photoconductors

Published online by Cambridge University Press:  21 March 2011

R. A. Street ,
J. Graham ,
Z. Popovic ,
A. Hor ,
M. Mulato ,
R. Lau  and
J. Ho
R. A. Street
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304
J. Graham
Affiliation:
Xerox Research Center of Canada, Mississauga, Ontario, Canada
Z. Popovic
Affiliation:
Xerox Research Center of Canada, Mississauga, Ontario, Canada
A. Hor
Affiliation:
Xerox Research Center of Canada, Mississauga, Ontario, Canada
M. Mulato
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304
R. Lau
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304
J. Ho
Affiliation:
Xerox PARC, 3333 Coyote Hill Road, Palo Alto, CA 94304
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Abstract

Two-dimensional image sensor arrays incorporating an organic light sensor are reported, with potential application to digital cameras and x-ray imaging. The 512×512 element array has pixel size of 100 micron, and operates with active matrix addressing using amorphous silicon thin film transistors. The array design allows the use of a continuous layer of the organic sensor material without the need for pixel-level patterning. The sensor is a bilayer comprising a thin generator layer and a thicker hole transport layer. Generator materials benzimidazole perylene (BZP) and hydroxy gallium phthalocyanine (HOGaPc) have been studied, with a tetraphenyldiamine (TPD) transport layer. Both sensors give excellent imaging properties with low leakage current, good charge collection and high spatial resolution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 665: Symposium C – Electronic, Optical and Optoelectronic Polymers and Oligomers , 2001 , C7.7
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

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