TY - JOUR
T1 - Sensitive near-infrared circularly polarized light detection via non-fullerene acceptor blends
AU - Wan, Li
AU - Zhang, Rui
AU - Cho, Eunkyung
AU - Li, Hongxiang
AU - Coropceanu, Veaceslav
AU - Brédas, Jean Luc
AU - Gao, Feng
N1 - Funding Information: L.W., R.Z. and F.G. would like to acknowledge financial support from the Knut and Alice Wallenberg Foundation (Dnr. KAW 2019.0082, F.G.) and the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University (faculty grant no. SFO-Mat-LiU #2009-00971, F.G.). F.G. acknowledges the Stiftelsen för Strategisk Forskning through a Future Research Leader programme (FFL18-0322). L.W., R.Z. and F.G. would like to thank the ProLinC facility at LiU for access to the CD spectrometer. L.W., R.Z. and F.G. would like to acknowledge that the GIWAXS measurement was carried out with support from the Shanghai Synchrotron Radiation Facility, 14BL beamline. The work at the University of Arizona was funded by the Office of Naval Research, award no. N00014-20-1-2110 (J.-L.B), and the UA College of Science (V.C. and J.-L.B.). Funding Information: L.W., R.Z. and F.G. would like to acknowledge financial support from the Knut and Alice Wallenberg Foundation (Dnr. KAW 2019.0082, F.G.) and the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University (faculty grant no. SFO-Mat-LiU #2009-00971, F.G.). F.G. acknowledges the Stiftelsen för Strategisk Forskning through a Future Research Leader programme (FFL18-0322). L.W., R.Z. and F.G. would like to thank the ProLinC facility at LiU for access to the CD spectrometer. L.W., R.Z. and F.G. would like to acknowledge that the GIWAXS measurement was carried out with support from the Shanghai Synchrotron Radiation Facility, 14BL beamline. The work at the University of Arizona was funded by the Office of Naval Research, award no. N00014-20-1-2110 (J.-L.B), and the UA College of Science (V.C. and J.-L.B.). Publisher Copyright: © 2023, The Author(s).
PY - 2023/8
Y1 - 2023/8
N2 - Circularly polarized light (CPL) is widely used for various applications in sensing and imaging1–3. An ongoing challenge is to realize high-quality CPL detection using chiral organic semiconductors, especially in the near-infrared (NIR) region4. Chiral molecules tend to rely on twisted stereogenic moieties; however, conventional approaches to reduce the bandgap of organic semiconductors are based on the use of co-planar backbones that commonly lead to molecular symmetries preventing chirality. Here we report a widely applicable strategy to directly induce chiroptical activity in planar non-fullerene acceptors5–7, which are widely used for high-performance organic photovoltaics and provide a wealth of opportunities to fill the spectral gap of CPL detection in the NIR regime. We demonstrate proof-of-concept circularly polarized organic photodiodes using chiroptically active non-fullerene acceptor blends, which exhibit strong circular dichroism and hence great sensitivity to CPL in the NIR region. Importantly, this strategy is found to be effective in a wide series of state-of-the-art non-fullerene acceptor families including ITIC5, o-IDTBR6 and Y6 analogues7, which substantially broadens the range of materials applicable to NIR CPL detection.
AB - Circularly polarized light (CPL) is widely used for various applications in sensing and imaging1–3. An ongoing challenge is to realize high-quality CPL detection using chiral organic semiconductors, especially in the near-infrared (NIR) region4. Chiral molecules tend to rely on twisted stereogenic moieties; however, conventional approaches to reduce the bandgap of organic semiconductors are based on the use of co-planar backbones that commonly lead to molecular symmetries preventing chirality. Here we report a widely applicable strategy to directly induce chiroptical activity in planar non-fullerene acceptors5–7, which are widely used for high-performance organic photovoltaics and provide a wealth of opportunities to fill the spectral gap of CPL detection in the NIR regime. We demonstrate proof-of-concept circularly polarized organic photodiodes using chiroptically active non-fullerene acceptor blends, which exhibit strong circular dichroism and hence great sensitivity to CPL in the NIR region. Importantly, this strategy is found to be effective in a wide series of state-of-the-art non-fullerene acceptor families including ITIC5, o-IDTBR6 and Y6 analogues7, which substantially broadens the range of materials applicable to NIR CPL detection.
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U2 - 10.1038/s41566-023-01230-z
DO - 10.1038/s41566-023-01230-z
M3 - Article
SN - 1749-4885
VL - 17
SP - 649
EP - 655
JO - Nature Photonics
JF - Nature Photonics
IS - 8
ER -