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Ivan Scheblykin. Portrait.

Ivan Scheblykin

Professor

Ivan Scheblykin. Portrait.

Intrinsic polarization-sensitive organic photodetector with self-assembled all-polymer heterojunction

Author

  • Xuhao Luo
  • Yingying Xue
  • Juntao Wu
  • Wanzhu Cai
  • Daniela Täuber
  • Ivan Malovicho
  • Bogdan Sava
  • Guobiao Cen
  • Xing Lu
  • Chuanxi Zhao
  • Ivan G. Scheblykin
  • Jianhui Yu
  • Wenjie Mai
  • Feng Liu
  • Ergang Wang
  • Lintao Hou
Show all

Summary, in English

Intrinsic polarization-sensitive photodetectors (IPPDs) have attracted considerable attention in recent years due to their simplicity in configuration, making them ideal candidates for compact and integrated polarization-sensitive sensing and imaging systems. Photoactive films with intrinsic optical anisotropy are necessary for IPPDs. This study reports an achievement of photoactive films based on all-polymer heterojunction films with in-plane optical anisotropy using a simple bottom-up self-assembly method. Both the donor (TQ1) and acceptor (N2200) polymers have the same spatial orientation with distinct anisotropy, approaching a dichroic ratio (DR) of 8. Polarization-sensitive light absorption is due to the uniaxially oriented polymer chains, which are dominated by lamellar packing with edge-on orientation. For IPPDs based on this anisotropic all-polymer heterojunction film, a photocurrent anisotropy was found with a polarized photocurrent ratio of 2.6. The detectivity of these IPPDs was found to be 1.9 × 1011 Jones (@ ∼600 nm, 0 V bias). Our work shows that oriented polymer donor-acceptor films fabricated using bottom-up self-assembly have great potential in applications, such as polarization detection.

Department/s

  • LTH Profile Area: Photon Science and Technology
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • NanoLund: Centre for Nanoscience
  • Chemical Physics

Publishing year

2022-12-05

Language

English

Publication/Series

Applied Physics Letters

Volume

121

Issue

23

Document type

Journal article

Publisher

American Institute of Physics (AIP)

Topic

  • Physical Chemistry (including Surface- and Colloid Chemistry)
  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0003-6951