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Main-​chain poly(fullerene) multiblock copolymers as organic photovoltaic donor-​acceptors and stabilizers

Abstract : A multi-​block copolymer based on main-​chain fullerene repeating units is used in org. photovoltaic devices for the first time. A poly(fullerene) (PFDP) is linked at the chain-​ends to poly(3-​hexylthiophene) (P3HT) to give poly[poly(3-​hexylthiophene)​-​block-​poly{([1,​4]​-​fullerene)​-​alt-​[1,​4-​dimethylene-​2,​5-​bis(cyclohexylmethyl ether)​phenylene]​}​] (P3HT-​b-​PFDP)​. While normal devices give poor results, inverted architectures result in near 50-​fold improvements in performances to a block copolymer efficiency of 2.8​% for this novel system. PFDP-​b-​P3HT is also employed as an additive to P3HT:PCBM bulk heterojunction devices and demonstrates increases from 3.6​% to 4.2​%, and remarkably gives a stable flat-​line efficiency over the time studied.
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https://hal.archives-ouvertes.fr/hal-01505554
Contributor : Eric Cloutet <>
Submitted on : Tuesday, April 11, 2017 - 2:35:00 PM
Last modification on : Wednesday, May 13, 2020 - 1:38:07 AM

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Mahfoudh Raïssi, Harikrishna Erothu, Emmanuel Ibarboure, Habiba Bejbouji, Henri Cramail, et al.. Main-​chain poly(fullerene) multiblock copolymers as organic photovoltaic donor-​acceptors and stabilizers. Journal of Materials Chemistry A, Royal Society of Chemistry, 2017, 5 (16), pp.7533-7544. ⟨10.1039/C7TA01980G⟩. ⟨hal-01505554⟩

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