Near-infrared absorbing pyrrolopyrrole aza-BODIPY-based donor-acceptor polymers with reasonable photoresponse

Ru Feng; Narumi Sato; Mayuka Nomura; Akinori Saeki; Hajime Nakanotani; Chihaya Adachi; Takuma Yasuda; Hiroyuki Furuta; Soji Shimizu

doi:10.1039/d0tc01487g

Near-infrared absorbing pyrrolopyrrole aza-BODIPY-based donor-acceptor polymers with reasonable photoresponse

Ru Feng, Narumi Sato, Mayuka Nomura, Akinori Saeki, Hajime Nakanotani, Chihaya Adachi, Takuma Yasuda, Hiroyuki Furuta, Soji Shimizu

Applied Chemistry

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Abstract

Designing near-infrared (NIR) absorbing donor-acceptor (D-A) polymers with photoresponse beyond 900 nm has remained a challenge in the area of organic photovoltaics (OPV) owing to the limited kinds of strong electron acceptors. Here we present the use of pyrrolopyrrole aza-BODIPY (PPAB) as a new acceptor group in D-A polymers in place of a conventional diketopyrrolopyrrole acceptor to achieve power conversion efficiencies up to 2.27% despite the ultra-small bandgap of 1.08 eV. The small photon energy loss of the PPAB-based D-A polymer and moderately high short-circuit current of 8.52 mA cm-2 arising from the panchromatic visible/NIR absorption guarantee PPAB as a potential building block of D-A polymers for NIR photovoltaics. This journal is

Original language	English
Pages (from-to)	8770-8776
Number of pages	7
Journal	Journal of Materials Chemistry C
Volume	8
Issue number	26
DOIs	https://doi.org/10.1039/d0tc01487g
Publication status	Published - Jul 14 2020

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Chemistry(all)
Materials Chemistry

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title = "Near-infrared absorbing pyrrolopyrrole aza-BODIPY-based donor-acceptor polymers with reasonable photoresponse",

abstract = "Designing near-infrared (NIR) absorbing donor-acceptor (D-A) polymers with photoresponse beyond 900 nm has remained a challenge in the area of organic photovoltaics (OPV) owing to the limited kinds of strong electron acceptors. Here we present the use of pyrrolopyrrole aza-BODIPY (PPAB) as a new acceptor group in D-A polymers in place of a conventional diketopyrrolopyrrole acceptor to achieve power conversion efficiencies up to 2.27% despite the ultra-small bandgap of 1.08 eV. The small photon energy loss of the PPAB-based D-A polymer and moderately high short-circuit current of 8.52 mA cm-2 arising from the panchromatic visible/NIR absorption guarantee PPAB as a potential building block of D-A polymers for NIR photovoltaics. This journal is ",

author = "Ru Feng and Narumi Sato and Mayuka Nomura and Akinori Saeki and Hajime Nakanotani and Chihaya Adachi and Takuma Yasuda and Hiroyuki Furuta and Soji Shimizu",

note = "Funding Information: This work was supported by Grants-in-Aids for Scientific Research (B) (JSPS KAKENHI Grant Number JP19H02703) and challenging Exploratory Research (JSPS KAKENHI Grant Number 18K19081). The authors thank Profs Atsushi Takahara and Ken Kojio and Mr Kiyu Uno for polymer analysis and Ms Natsuko Ide for the TEM measurements.",

year = "2020",

month = jul,

day = "14",

doi = "10.1039/d0tc01487g",

language = "English",

volume = "8",

pages = "8770--8776",

journal = "Journal of Materials Chemistry C",

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publisher = "Royal Society of Chemistry",

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T1 - Near-infrared absorbing pyrrolopyrrole aza-BODIPY-based donor-acceptor polymers with reasonable photoresponse

AU - Feng, Ru

AU - Sato, Narumi

AU - Nomura, Mayuka

AU - Saeki, Akinori

AU - Nakanotani, Hajime

AU - Adachi, Chihaya

AU - Yasuda, Takuma

AU - Furuta, Hiroyuki

AU - Shimizu, Soji

N1 - Funding Information: This work was supported by Grants-in-Aids for Scientific Research (B) (JSPS KAKENHI Grant Number JP19H02703) and challenging Exploratory Research (JSPS KAKENHI Grant Number 18K19081). The authors thank Profs Atsushi Takahara and Ken Kojio and Mr Kiyu Uno for polymer analysis and Ms Natsuko Ide for the TEM measurements.

PY - 2020/7/14

Y1 - 2020/7/14

N2 - Designing near-infrared (NIR) absorbing donor-acceptor (D-A) polymers with photoresponse beyond 900 nm has remained a challenge in the area of organic photovoltaics (OPV) owing to the limited kinds of strong electron acceptors. Here we present the use of pyrrolopyrrole aza-BODIPY (PPAB) as a new acceptor group in D-A polymers in place of a conventional diketopyrrolopyrrole acceptor to achieve power conversion efficiencies up to 2.27% despite the ultra-small bandgap of 1.08 eV. The small photon energy loss of the PPAB-based D-A polymer and moderately high short-circuit current of 8.52 mA cm-2 arising from the panchromatic visible/NIR absorption guarantee PPAB as a potential building block of D-A polymers for NIR photovoltaics. This journal is

AB - Designing near-infrared (NIR) absorbing donor-acceptor (D-A) polymers with photoresponse beyond 900 nm has remained a challenge in the area of organic photovoltaics (OPV) owing to the limited kinds of strong electron acceptors. Here we present the use of pyrrolopyrrole aza-BODIPY (PPAB) as a new acceptor group in D-A polymers in place of a conventional diketopyrrolopyrrole acceptor to achieve power conversion efficiencies up to 2.27% despite the ultra-small bandgap of 1.08 eV. The small photon energy loss of the PPAB-based D-A polymer and moderately high short-circuit current of 8.52 mA cm-2 arising from the panchromatic visible/NIR absorption guarantee PPAB as a potential building block of D-A polymers for NIR photovoltaics. This journal is

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Near-infrared absorbing pyrrolopyrrole aza-BODIPY-based donor-acceptor polymers with reasonable photoresponse

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