Photovoltaic and photoconductive properties of aluminum/poly(p-phenylene vinylene) interfaces
| Autor: | Milan Stolka, Homer Antoniadis, Bing R. Hsieh, Samson A. Jenekhe, Martin A. Abkowitz |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Photocurrent
Materials science business.industry Mechanical Engineering Photoconductivity Photovoltaic system Metals and Alloys chemistry.chemical_element Poly(p-phenylene vinylene) Condensed Matter Physics Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Mechanics of Materials Aluminium Electrode Materials Chemistry Optoelectronics business Electrical efficiency Voltage |
| Zdroj: | Synthetic Metals. 62:265-271 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/0379-6779(94)90215-1 |
| Popis: | Photoconductive and photovoltaic properties of Al/PPV/ITO sandwich devices were investigated by measuring steady-state photocurrents resulting from illumination through the Al electrode. A built-in potential (Vbi) was detected at the Al/PPV interface. The voltage dependence of the photocurrent in the vicinity of Vbi was measured at 1 mW/cm2 of incident illumination to give an open-circuit voltage and a short-circuit current of 1.2 V and 6 × 10−7 A/cm2, respectively. The dependences of the short-circuit current on excitation wavelength and illumination intensity are presented and the C-V characteristics of the Al/PPV interface are analyzed. The quantum collection efficiency decreased from 5% to 1% as the intensity of illumination increased from 10−5 to 1 mW/cm2. The photovoltaic conversion power efficiency was about 0.07% for intensities approaching 1 mW/cm2. The Vbi value was accounted for by surface band-bending at the Al/PPV interface. |
| Databáze: | OpenAIRE |
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