Donor–acceptor polymers with tunable infrared photoresponse


Journal article


Alexander E London, Lifeng Huang, Benjamin A Zhang, M Belén Oviedo, Joshua Tropp, Weichuan Yao, Zhenghui Wu, Bryan M Wong, Tse Nga Ng, Jason D Azoulay
Polymer Chemistry, vol. 8(19), 2017, pp. 2922-2930


Cite

Cite

APA   Click to copy
London, A. E., Huang, L., Zhang, B. A., Oviedo, M. B., Tropp, J., Yao, W., … Azoulay, J. D. (2017). Donor–acceptor polymers with tunable infrared photoresponse. Polymer Chemistry, 8(19), 2922–2930. https://doi.org/10.1039/C7PY00241F


Chicago/Turabian   Click to copy
London, Alexander E, Lifeng Huang, Benjamin A Zhang, M Belén Oviedo, Joshua Tropp, Weichuan Yao, Zhenghui Wu, Bryan M Wong, Tse Nga Ng, and Jason D Azoulay. “Donor–Acceptor Polymers with Tunable Infrared Photoresponse.” Polymer Chemistry 8, no. 19 (2017): 2922–2930.


MLA   Click to copy
London, Alexander E., et al. “Donor–Acceptor Polymers with Tunable Infrared Photoresponse.” Polymer Chemistry, vol. 8, no. 19, 2017, pp. 2922–30, doi:10.1039/C7PY00241F.


BibTeX   Click to copy

@article{alexander2017a,
  title = {Donor–acceptor polymers with tunable infrared photoresponse},
  year = {2017},
  issue = {19},
  journal = {Polymer Chemistry},
  pages = {2922-2930},
  volume = {8},
  doi = {10.1039/C7PY00241F},
  author = {London, Alexander E and Huang, Lifeng and Zhang, Benjamin A and Oviedo, M Belén and Tropp, Joshua and Yao, Weichuan and Wu, Zhenghui and Wong, Bryan M and Ng, Tse Nga and Azoulay, Jason D}
}

Donor–acceptor (DA) conjugated polymers provide an important platform for the development of solution-processed optoelectronic devices. The complex interrelation between electronic properties and conformational disorder in these materials complicates the identification of design guidelines to control the bandgap at low energies, limiting the design of new optoelectronic and device functionalities. Here, we demonstrate that DA polymers comprised of exocyclic olefin substituted cyclopentadithiophene donors, in combination with conventional electron acceptors, display very narrow optical bandgaps (1.2 > Eoptg > 0.7 eV) and primary photoexcitations extending into the shortwave infrared. Theoretical calculations reveal fundamental structure–property relationships toward bandgap and energy level control in these spectral regions. Bulk heterojunction photodiodes fabricated using these new materials demonstrate a detectivity (D*) of > 1011 Jones within a spectral range of 0.6–1.43 μm and measurable D* to 1.8 μm, the longest reported to date for conjugated polymer based systems.






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