Photoresponse of poly([ital para]-phenylenevinylene) light-emitting diodes
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Department of Physics, University of Utah, Salt Lake City, Utah 84112 (United States)
- UNIAX Corporation, 5375 Overpass Road, Santa Barbara, California 93111 (United States)
- Institute of Polymers and Organic Solids, University of California, Santa Barbara, California 93106 (United States)
We have studied the photoresponses of poly([ital para]-phenylene vinylene) (PPV) light-emitting diodes (LED's) with PPV derivatives sandwiched between tin oxide (ITO) and metals including calcium, aluminum, and copper. Under illumination all diodes exhibit relatively large photoconductive I(V) responses which cross the dark I(V) curve at a forward-bias voltage V[sub 0] that scales with the difference in work functions between the ITO and metal electrodes, the open-circuit voltage saturates at V[sub 0] and is temperature independent, and the enhanced electroluminescence intensity of the illuminated LED's correlates with the photocurrent. (AIP)
- DOE Contract Number:
- FG03-93ER12138
- OSTI ID:
- 7045036
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 49:24; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ALKALINE EARTH METALS
ALUMINIUM
CALCIUM
CHALCOGENIDES
COPPER
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROLUMINESCENCE
ELEMENTS
INDIUM COMPOUNDS
INDIUM OXIDES
LIGHT EMITTING DIODES
LUMINESCENCE
MATERIALS
METALS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SEMICONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHENYLENE RADICALS
PHOTOCONDUCTIVITY
PHOTOELECTROMAGNETIC EFFECTS
PHOTOVOLTAIC EFFECT
PHYSICAL PROPERTIES
POLYMERS
POLYVINYLS
RADICALS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SEMICONDUCTOR MATERIALS
TIN COMPOUNDS
TIN OXIDES
TRANSITION ELEMENTS
360606* -- Other Materials-- Physical Properties-- (1992-)
ALKALINE EARTH METALS
ALUMINIUM
CALCIUM
CHALCOGENIDES
COPPER
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROLUMINESCENCE
ELEMENTS
INDIUM COMPOUNDS
INDIUM OXIDES
LIGHT EMITTING DIODES
LUMINESCENCE
MATERIALS
METALS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SEMICONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHENYLENE RADICALS
PHOTOCONDUCTIVITY
PHOTOELECTROMAGNETIC EFFECTS
PHOTOVOLTAIC EFFECT
PHYSICAL PROPERTIES
POLYMERS
POLYVINYLS
RADICALS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SEMICONDUCTOR MATERIALS
TIN COMPOUNDS
TIN OXIDES
TRANSITION ELEMENTS