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Issue 40, 2018
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Low-LUMO acceptor polymers for high-gain all-polymer photodiodes

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Abstract

In this work, we report three acceptor polymers with low levels of lowest unoccupied molecular orbital (LUMO) energies and studies on all-polymer photodiodes. By employing these polymers as electron acceptors and PTB7-Th as electron donors, we prepared all-polymer photodiodes that exhibited a high gain in external quantum efficiency (EQE) and high detectivity. In particular, P3-based devices showed EQE over 40 000%, responsivity over 110 A W−1 and a specific detectivity of 3.5 × 1014 Jones, representing the best result of all-polymer photodiodes reported to date. Our work has demonstrated that high gain all-polymer photodiodes could be readily achieved by using appropriate interlayers and low-LUMO acceptor polymers.

Graphical abstract: Low-LUMO acceptor polymers for high-gain all-polymer photodiodes

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Article information


Submitted
28 Jul 2018
Accepted
12 Sep 2018
First published
12 Sep 2018

J. Mater. Chem. C, 2018,6, 10838-10844
Article type
Paper

Low-LUMO acceptor polymers for high-gain all-polymer photodiodes

J. Han, D. Yang, Y. Wang, D. Ma, W. Qiao and Z. Y. Wang, J. Mater. Chem. C, 2018, 6, 10838
DOI: 10.1039/C8TC03753A

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