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Charge Transport and Recombination in Organic Solar Cells (OSCs)

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Organic and Hybrid Solar Cells

Abstract

Organic compounds are mainly hydrocarbon compounds with a backbone of carbon atoms. The strong bonds that form the molecular backbone are a result of overlap of sp2 hybridized atomic orbitals of adjacent carbon atoms, yielding a bonding σ and an antibonding σ* orbitals. The remaining unhybridized p orbitals overlap and form π and π*orbitals. The energies of π and π* orbitals are higher than those of σ orbitals, whereas energies of π* orbitals are lower than those of σ orbitals. Based on Pauli exclusion principle and Hund’s rule, the energies of π and π* orbitals are defined as highest occupied molecular orbital (HOMO), and lowest unoccupied molecular orbitals (LUMO), respectively.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Northwestern University, 2220 campus Drive, 60208, Evaston, IL, USA

    Nanjia Zhou

  2. Department of Chemistry, Northwestern University, 2145 Sheridan Road, 60208, Evanston, IL, USA

    Antonio Facchetti

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  1. Nanjia Zhou
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  2. Antonio Facchetti
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Correspondence to Nanjia Zhou .

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  1. College of Materials Science and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing, China

    Hui Huang

  2. Mechanical & Materials Engineering, University of Nebraska, Lincoln, Nebraska, USA

    Jinsong Huang

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Zhou, N., Facchetti, A. (2014). Charge Transport and Recombination in Organic Solar Cells (OSCs). In: Huang, H., Huang, J. (eds) Organic and Hybrid Solar Cells. Springer, Cham. https://doi.org/10.1007/978-3-319-10855-1_2

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  • DOI: https://doi.org/10.1007/978-3-319-10855-1_2

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