Two-in-one: cathode modification and improved solar cell blend stability through addition of modified fullerenes

Zandra George; Yuxin Xia; Anirudh Sharma; Camilla Lindqvist; Gunther Andersson; Olle Inganas; Ellen Moons; Christian Muller; Mats R. Andersson

doi:10.1039/c5ta06420a

Two-in-one: cathode modification and improved solar cell blend stability through addition of modified fullerenes

Zandra George, Yuxin Xia, Anirudh Sharma, Camilla Lindqvist, Gunther Andersson, Olle Inganas, Ellen Moons, Christian Muller, Mats R. Andersson

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

The synthesis of dual purpose modified fullerenes with pyridine- as well as amine-functional groups is reported. Addition of these fullerenes to a polymer : fullerene bulk-heterojunction blend based on a thiophene-quinoxaline donor polymer is found to modify the active layer/cathode interface of inverted solar cells (glass/ITO/active layer/MoO₃/Al). In particular the open-circuit voltage of devices is increased from 0.1 V to about 0.7 V, which results in a drastic rise in photovoltaic performance with a power conversion efficiency of up to 3%. At the same time, presence of the functionalised fullerene additives prevents the detrimental formation of micrometre-sized fullerene crystals upon annealing at 140 °C. As a result, the device performance is retained, which promises significantly increased thermal stability of the bulk-heterojunction blend nanostructure.

Original language	English
Pages (from-to)	2663-2669
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	4
Issue number	7
DOIs	https://doi.org/10.1039/c5ta06420a
Publication status	Published - 2016

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10.1039/c5ta06420a

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abstract = "The synthesis of dual purpose modified fullerenes with pyridine- as well as amine-functional groups is reported. Addition of these fullerenes to a polymer : fullerene bulk-heterojunction blend based on a thiophene-quinoxaline donor polymer is found to modify the active layer/cathode interface of inverted solar cells (glass/ITO/active layer/MoO3/Al). In particular the open-circuit voltage of devices is increased from 0.1 V to about 0.7 V, which results in a drastic rise in photovoltaic performance with a power conversion efficiency of up to 3%. At the same time, presence of the functionalised fullerene additives prevents the detrimental formation of micrometre-sized fullerene crystals upon annealing at 140 °C. As a result, the device performance is retained, which promises significantly increased thermal stability of the bulk-heterojunction blend nanostructure.",

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T1 - Two-in-one: cathode modification and improved solar cell blend stability through addition of modified fullerenes

AU - George, Zandra

AU - Xia, Yuxin

AU - Sharma, Anirudh

AU - Lindqvist, Camilla

AU - Andersson, Gunther

AU - Inganas, Olle

AU - Moons, Ellen

AU - Muller, Christian

AU - Andersson, Mats R.

PY - 2016

Y1 - 2016

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AB - The synthesis of dual purpose modified fullerenes with pyridine- as well as amine-functional groups is reported. Addition of these fullerenes to a polymer : fullerene bulk-heterojunction blend based on a thiophene-quinoxaline donor polymer is found to modify the active layer/cathode interface of inverted solar cells (glass/ITO/active layer/MoO3/Al). In particular the open-circuit voltage of devices is increased from 0.1 V to about 0.7 V, which results in a drastic rise in photovoltaic performance with a power conversion efficiency of up to 3%. At the same time, presence of the functionalised fullerene additives prevents the detrimental formation of micrometre-sized fullerene crystals upon annealing at 140 °C. As a result, the device performance is retained, which promises significantly increased thermal stability of the bulk-heterojunction blend nanostructure.

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DO - 10.1039/c5ta06420a

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JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 7

ER -

Two-in-one: cathode modification and improved solar cell blend stability through addition of modified fullerenes

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