Intrinsic polarization-sensitive organic photodetector with self-assembled all-polymer heterojunction
Journal article, 2022

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.

Author

Xuhao Luo

Jinan University

Yingying Xue

Jinan University

Juntao Wu

Jinan University

Wanzhu Cai

Jinan University

Daniela Täuber

Leibniz-Institut Für Photonische Technologien E.V.

Friedrich Schiller University Jena

Ivan Malovicho

attocube systems AG

Bogdan Sava

attocube systems AG

Guobiao Cen

Jinan University

Xing Lu

Jinan University

Chuanxi Zhao

Jinan University

Ivan Scheblykin

Lund University

Jianhui Yu

Jinan University

Wenjie Mai

Jinan University

Feng Liu

Shanghai Jiao Tong University

Ergang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Lintao Hou

Jinan University

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 121 23 233301

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics

DOI

10.1063/5.0128850

More information

Latest update

10/27/2023