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Design of organic small molecules for photovoltaic application with high open-circuit voltage (Voc)

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Abstract

Open-circuit voltage (Voc), as a key parameter, plays an important role in determining power conversion efficiency (PCE) of organic solar cells (OSCs). With the rapid development in OSCs based on small molecules, more and more attention has been paid to fabricate photovoltaic devices with high Voc values by designing novel small molecule materials, which has pushed the highest Voc values for single-junction OSCs based on small molecules as donors or acceptors to be 1.12 V and 1.36 V, respectively. In this review, recent advances with respect to photovoltaic materials applied in OSCs featuring high Voc values will be summarized from two aspects: small molecule donors and small molecule acceptors. Moreover, we will systematically discuss the relationship between molecular structures of small molecule materials and Voc values for OSCs, which will provide a guideline on the design of organic small molecule materials for obtaining photovoltaic devices with high Voc values.

Graphical abstract: Design of organic small molecules for photovoltaic application with high open-circuit voltage (Voc)

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Publication details

The article was received on 28 Dec 2018, accepted on 30 Jan 2019 and first published on 30 Jan 2019


Article type: Review Article
DOI: 10.1039/C8TC06589F
Citation: J. Mater. Chem. C, 2019, Advance Article

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    Design of organic small molecules for photovoltaic application with high open-circuit voltage (Voc)

    X. He, L. Yin and Y. Li, J. Mater. Chem. C, 2019, Advance Article , DOI: 10.1039/C8TC06589F

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