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

Luo, Xuhao ; Xue, Yingying ; Wu, Juntao ; Cai, Wanzhu ; Täuber, Daniela LU ; Malovicho, Ivan ; Sava, Bogdan ; Cen, Guobiao ; Lu, Xing and Zhao, Chuanxi , et al. (2022) In Applied Physics Letters 121(23).
Abstract

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... (More)

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.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Physics Letters
volume
121
issue
23
article number
233301
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:85144569051
ISSN
0003-6951
DOI
10.1063/5.0128850
language
English
LU publication?
yes
id
81b9d5a3-8c2c-478c-884a-85a026f66b81
date added to LUP
2023-01-16 08:40:26
date last changed
2023-11-20 16:25:54
@article{81b9d5a3-8c2c-478c-884a-85a026f66b81,
  abstract     = {{<p>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.</p>}},
  author       = {{Luo, Xuhao and Xue, Yingying and Wu, Juntao and Cai, Wanzhu and Täuber, Daniela and Malovicho, Ivan and Sava, Bogdan and Cen, Guobiao and Lu, Xing and Zhao, Chuanxi and Scheblykin, Ivan G. and Yu, Jianhui and Mai, Wenjie and Liu, Feng and Wang, Ergang and Hou, Lintao}},
  issn         = {{0003-6951}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{23}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Applied Physics Letters}},
  title        = {{Intrinsic polarization-sensitive organic photodetector with self-assembled all-polymer heterojunction}},
  url          = {{http://dx.doi.org/10.1063/5.0128850}},
  doi          = {{10.1063/5.0128850}},
  volume       = {{121}},
  year         = {{2022}},
}