Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/38705
Title: | Electron-donating amine-interlayer induced n-type doping of polymer:nonfullerene blends for efficient narrowband near-infrared photo-detection | Authors: | LIU, Quan Zeiske, Stefan JIANG, Xueshi DESTA, Derese MERTENS, Sigurd GIELEN, Sam SHANIVARASANTHE NITHYANANDA KUMAR, Rachith BOYEN, Hans-Gerd Armin, Ardalan VANDEWAL, Koen |
Issue Date: | 2022 | Publisher: | NATURE PORTFOLIO | Source: | Nature Communications, 13 (1) (Art N° 5194) | Abstract: | Inherently narrowband near-infrared organic photodetectors are highly desired for many applications, including biological imaging and surveillance. However, they suffer from a low photon-to-charge conversion efficiencies and utilize spectral narrowing techniques which strongly rely on the used material or on a nano-photonic device architecture. Here, we demonstrate a general and facile approach towards wavelength-selective near-infrared phtotodetection through intentionally n-doping 500-600 nm-thick nonfullerene blends. We show that an electron-donating amine-interlayer can induce n-doping, resulting in a localized electric field near the anode and selective collection of photo-generated carriers in this region. As only weakly absorbed photons reach this region, the devices have a narrowband response at wavelengths close to the absorption onset of the blends with a high spectral rejection ratio. These spectrally selective photodetectors exhibit zero-bias external quantum efficiencies of similar to 20-30% at wavelengths of 900-1100 nm, with a full-width-at-half-maximum of <= 50 nm, as well as detectivities of >10(12) Jones. | Notes: | Liu, Q; Vandewal, K (corresponding author), Hasselt Univ, Agoralaan 1, B-3590 Diepenbeek, Belgium.; Liu, Q; Vandewal, K (corresponding author), IMEC, IMOMEC Div, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. quan.liu@uhasselt.be; koen.vandewal@uhasselt.be |
Document URI: | http://hdl.handle.net/1942/38705 | e-ISSN: | 2041-1723 | DOI: | 10.1038/s41467-022-32845-5 | ISI #: | 000849494300019 | Rights: | The Author(s) 2022. 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/. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2023 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Electron-donating amine-interlayer induced n-type doping of polymer_nonfullerene blends for efficient narrowband near-infrared photo-detection.pdf | Published version | 2.6 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.