Charge-carrier-mobility-dependent-open-circuit-voltage-in-organic-and-hybrid-solar-cells

David Ompong, Jai Singh

Research output: Contribution to journalArticle

Abstract

A better understanding of the open-circuit voltage (V) related losses in organic solar cells (OSCs) is desirable in order to assess their photovoltaic performance. We have derived V∝ as a function of charge carrier mobilities (µg and µn) for organic and hybrid solar cells by optimizing the drift-diffusion current density. The V∝ thus obtained depends on the energy difference between the highest occupied molecular orbital (HOMO) level and the quasi-Fermi level of holes of the donor material and on the ratio of the electron (µg) and hole (µn) mobilities in the blend. It is found that the V∝ increases with the increase of the mobility ratio µe / µ. The most loss in V∝ is contributed by the energetics of the donor and acceptor materials.
Original languageEnglish
Pages (from-to)43-47
Number of pages5
JournalFrontiers in Nanoscience and Nanotechnology
DOIs
Publication statusPublished - 2016

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