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. 2020 Jun 8;11:2871. doi: 10.1038/s41467-020-16675-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — a Typical device structure of self-filtering (SF) narrowband organic photodetector (OPD) with double donor layers. b Chemical structures of the selected donor materials, acceptor materials and SF hole transport layer (SF-HTL) materials. c Normalized external quantum efficiency (EQE) spectra of SF-narrowband OPDs fabricated by matching different materials, all devices were measured at −0.1 V bias. d Dark current density of SF-narrowband OPDs based on DT-PDPP2T-TT/Y6 and DT-PDPP2T-TT/IEICO-4F. e Specific detectivity spectra of OPDs based on DT-PDPP2T-TT/Y6 and f DT-PDPP2T-TT/IEICO-4F, respectively.