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Issue 6, 2019
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Triplet excitons: improving exciton diffusion length for enhanced organic photovoltaics

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Abstract

A short exciton diffusion length (LD) is one of the main factors limiting the final power conversion efficiency (PCE) of organic photovoltaics (OPV). Aiming at overcoming this barrier, there have been studies on the use of longer-lived triplet excitons, which can be introduced either through triplet sensitization by doping or through the use of donor materials containing heavy atoms that allow for intersystem crossing (ISC). This review focuses on how these systems have been shown to increase LD, leading to increased PCEs, and discusses challenges associated with the use of triplet materials.

Graphical abstract: Triplet excitons: improving exciton diffusion length for enhanced organic photovoltaics

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Publication details

The article was received on 18 Oct 2018, accepted on 04 Jan 2019 and first published on 05 Jan 2019


Article type: Review Article
DOI: 10.1039/C8TA10037C
J. Mater. Chem. A, 2019,7, 2445-2463

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    Triplet excitons: improving exciton diffusion length for enhanced organic photovoltaics

    B. T. Luppi, D. Majak, M. Gupta, E. Rivard and K. Shankar, J. Mater. Chem. A, 2019, 7, 2445
    DOI: 10.1039/C8TA10037C

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