Semiconducting polymer diodes: Large size, low cost photodetectors with excellent visible-ultraviolet sensitivity
- Institute for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, California 93106-5090 (United States)
Photodiodes fabricated from conjugated polymers exhibit excellent sensitivity to visible-UV radiation. The photosensitivity increases with reverse bias voltage. The photoresponse of diodes fabricated from poly(3-octyl thiophene) is relatively flat in the visible and near UV; for wavelengths shorter than 550 nm, the absolute sensitivity is greater than 0.3 A/W under reverse bias of 15 V, larger than that of commercial UV-enhanced Si photodiodes. Photodiodes made from poly[2-methoxy-5-(2[prime]-ethyl-hexyloxy)-1,4-phenylene vinylene], MEH-PPV, sensitized with C[sub 60], show similar sensitivity. The ease of fabrication into large size, arbitrary shapes, and even onto flexible substrates makes the polymer photodiode a novel photodetector with potential for use in a wide range of applications.
- DOE Contract Number:
- FG03-93ER12138
- OSTI ID:
- 7043788
- Journal Information:
- Applied Physics Letters; (United States), Vol. 64:25; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
PHOTODIODES
FABRICATION
PHOTOSENSITIVITY
COST
PHOTODETECTORS
POLYMERS
SEMICONDUCTOR DIODES
ULTRAVIOLET RADIATION
VISIBLE RADIATION
ELECTROMAGNETIC RADIATION
RADIATIONS
SEMICONDUCTOR DEVICES
SENSITIVITY
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)
360606 - Other Materials- Physical Properties- (1992-)