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Light Soaking Induced Increase in Conversion Efficiency in Solar Cells Based on In(OH)<sub>x</sub>S<sub>y</sub>/Pb(OH)<sub>x</sub>S<sub>y</sub>
Department of Physics, School of Physical Sciences, University of Nairobi, Nairobi, Kenya
Department of Physics, School of Physical Sciences, University of Nairobi, Nairobi, Kenya
Department of Physics, School of Physical Sciences, University of Nairobi, Nairobi, Kenya
Solarenergieforsung (SE2), Lise- Meitner Campus, Hermholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
Solarenergieforsung (SE2), Lise- Meitner Campus, Hermholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
Solarenergieforsung (SE2), Lise- Meitner Campus, Hermholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
- 1 Department of Physics, School of Physical Sciences, University of Nairobi, Nairobi, Kenya
- 2 Department of Physics, School of Physical Sciences, University of Nairobi, Nairobi, Kenya
- 3 Department of Physics, School of Physical Sciences, University of Nairobi, Nairobi, Kenya
- 4 Solarenergieforsung (SE2), Lise- Meitner Campus, Hermholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
- 5 Solarenergieforsung (SE2), Lise- Meitner Campus, Hermholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
- 6 Solarenergieforsung (SE2), Lise- Meitner Campus, Hermholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
Materials Sciences and Applications·Volume 04 (2013)·Pages 718–722·Published 15 November 2013·DOI10.4236/msa.2013.411090
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Abstract
Light soaking characterization on complete SnO 2 :F/TiO 2 /In(OH) x S y /Pb(OH) x S y /PEDOT:PSS/Au, eta solar cell structure as well as on devices which do not include one or both TiO 2 and/or PEDOT:PSS layers has been conducted. Addition ally, studies of SnO 2 :F/In(OH) x S y /Pb(OH) x S y /PEDOT:PSS/Au solar cell have been performed. The power conversion efficiency and the short circuit current density have been found to increase with light soaking duration by a factor of about 1.6 - 2.7 and 2.1 - 3, respectively. The increase in these two parameters has been attributed to the filling up of trap states and/or charge - discharge of deep levels found in In(OH) x S y . These effects take place at almost fill factor and open circuit voltage being unaffected by the light soaking effects.
KeywordsEta Solar CellLight SoakingConversion EfficiencyTiO<sub>2</sub>In(OH)<sub>x</sub>S<sub>y</sub>Pb(OH)<sub>x</sub>
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