<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"> <dc:creator>Kublitski, Jonas</dc:creator> <dc:creator>Fischer, Axel</dc:creator> <dc:creator>Xing, Shen</dc:creator> <dc:creator>Baisinger, Lukasz</dc:creator> <dc:creator>Bittrich, Eva</dc:creator> <dc:creator>Benduhn, Johannes</dc:creator> <dc:creator>Spoltore, Donato</dc:creator> <dc:creator>Vandewal, Koen</dc:creator> <dc:creator>Leo, Karl</dc:creator> <dc:date>2021-06-21</dc:date> <dc:description>Detection of electromagnetic signals for applications such as health, product quality monitoring or astronomy requires highly responsive and wavelength selective devices. Photomultiplication-type organic detectors (PM-OPDs) have shown to achieve high quantum efficiencies mainly in the visible range. Much less research has been focused on realizing near-infrared narrowband PM-OPDs. Here, we demonstrate fully vacuum-processed narrow- and broadband PM‑OPDs. Our devices are based on enhanced hole injection leading to a maximum external quantum efficiency (EQE) of almost 2000% at -10 V for the broadband device. The photomultiplicative effect is also observed in the charge-transfer (CT) state absorption region. By making use of an optical cavity device architecture, we enhance CT absorption and demonstrate a wavelength tunable narrowband PM-OPD with EQEs superior to those of pin‑devices. The presented concept can further improve the performance of state-of-the-art OPDs based on the absorption of CT states, which were so far limited by the low EQE provided by these devices.</dc:description> <dc:identifier>https://archive.materialscloud.org/record/2021.89</dc:identifier> <dc:identifier>doi:10.24435/materialscloud:8w-q6</dc:identifier> <dc:identifier>mcid:2021.89</dc:identifier> <dc:identifier>oai:materialscloud.org:887</dc:identifier> <dc:language>en</dc:language> <dc:publisher>Materials Cloud</dc:publisher> <dc:rights>info:eu-repo/semantics/openAccess</dc:rights> <dc:rights>Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights> <dc:subject>Photomultiplication</dc:subject> <dc:subject>Organic Photodetectors</dc:subject> <dc:subject>Narrowband</dc:subject> <dc:subject>Experimental</dc:subject> <dc:title>Enhancing sub-bandgap external quantum efficiency by photomultiplication for narrowband organic near-infrared photodetectors</dc:title> <dc:type>Dataset</dc:type> </oai_dc:dc>