Hydrogenated amorphous carbon based solar cells by pulsed laser deposition with mixture of graphite and camphor as precursor materials
The authors have deposited hydrogenated amorphous carbon films (a-C:H) on quartz and p type silicon substrates (100) by pulsed laser deposition (PLD) using a mixture of graphite and camphor powders at room temperature. The presence of hydrogen in the a-C:H films has been revealed by fourier transfor...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Maney Publishing
2007
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| Subjects: | |
| Online Access: | http://eprints.utm.my/17107/ http://eprints.utm.my/17107/ http://eprints.utm.my/17107/ http://eprints.utm.my/17107/1/RusopM2007_HydrogenatedAmorphousCarbonBasedSolar.pdf |
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| Summary: | The authors have deposited hydrogenated amorphous carbon films (a-C:H) on quartz and p type silicon substrates (100) by pulsed laser deposition (PLD) using a mixture of graphite and camphor powders at room temperature. The presence of hydrogen in the a-C:H films has been revealed by fourier transform infrared spectroscopy (FTIR) measurement. The solar cell structure of a-C:H/p-Si was also fabricated. The formation of a heterojunction between the a-C:H films and silicon substrate was confirmed by the current–voltage (I–V) measurement in the dark and under illumination conditions. The structure of a-C:H/p-Si showed photovoltaic characteristics with an open circuit voltage Voc of 400 mV and short circuit current density Jsc of ~15 mA cm-2 under illumination [air mass (AM) 1·5, 100 mW cm-2, 25°C]. From the calculation, the energy conversion efficiency and fill factor were found to be approximately 2·1% and 0·38 respectively. The carbon layer is contributed to the energy conversion efficiency, which was proved by the measurement of quantum efficiency.
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