Analytical expression for the current-voltage characteristics of organic bulk heterojunction solar cells

Inche Ibrahim, M.L. and Ahmad, Z. and Sulaiman, K. (2015) Analytical expression for the current-voltage characteristics of organic bulk heterojunction solar cells. AIP Advances, 5 (027115). ISSN 2158-3226, DOI https://doi.org/10.1063/1.4908036.

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Abstract

An expression to describe the current-voltage characteristics of organic bulk heterojunction (BHJ) solar cells is derived. The derivation is obtained by analytically solving the drift-diffusion model for organic BHJ solar cells with the assumption of uniform bimolecular recombination rate. The assumption of uniform bimolecular recombination rate leads to somewhat inaccurate, for example, carrier densities as functions of the position inside the device. However, we show that this assumption should still produce an expression for the current as a function of applied voltage as if the actual bimolecular recombination rate is considered in the derivation. Applying this analytical expression to experimental current-voltage data enable us to directly extract and analyze, for example, the recombination loss of an organic BHJ solar cell as a function of applied voltage.

Item Type:	Article
Funders:	University of Malaya
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Department of Physics
Depositing User:	Mr Mohd Lukman Inche Ibrahim
Date Deposited:	18 Feb 2015 06:13
Last Modified:	18 Feb 2015 06:13
URI:	http://eprints.um.edu.my/id/eprint/12828

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