Semiconducting polymer diodes: Large size, low cost photodetectors with excellent visible-ultraviolet sensitivity

Journal Article · Mon Jun 20 00:00:00 EDT 1994 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.111260· OSTI ID:7043788

Yu, G; Pakbaz, K; Heeger, A J ^[1]

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1. 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), Journal Name: Applied Physics Letters; (United States) Vol. 64:25; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
42 ENGINEERING
426000* -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
COST
ELECTROMAGNETIC RADIATION
FABRICATION
PHOTODETECTORS
PHOTODIODES
PHOTOSENSITIVITY
POLYMERS
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SENSITIVITY
ULTRAVIOLET RADIATION
VISIBLE RADIATION