Highly Efficient Rubrene–Graphene Charge-Transfer Interfaces as Phototransistors in the Visible Regime
dc.contributor.author | Jones, GF | |
dc.contributor.author | Pinto, RM | |
dc.contributor.author | De Sanctis, A | |
dc.contributor.author | Nagareddy, KV | |
dc.contributor.author | Wright, DC | |
dc.contributor.author | Alves, H | |
dc.contributor.author | Craciun, MF | |
dc.contributor.author | Russo, S | |
dc.date.accessioned | 2017-09-27T09:55:26Z | |
dc.date.issued | 2017-09-25 | |
dc.description.abstract | Atomically thin materials such as graphene are uniquely responsive to charge transfer from adjacent materials, making them ideal charge-transport layers in phototransistor devices. Effective implementation of organic semiconductors as a photoactive layer would open up a multitude of applications in biomimetic circuitry and ultra-broadband imaging but polycrystalline and amorphous thin films have shown inferior performance compared to inorganic semiconductors. Here, the long-range order in rubrene single crystals is utilized to engineer organic-semiconductor–graphene phototransistors surpassing previously reported photogating efficiencies by one order of magnitude. Phototransistors based upon these interfaces are spectrally selective to visible wavelengths and, through photoconductive gain mechanisms, achieve responsivity as large as 10^7 A/W and a detectivity of 9 × 10^11 Jones at room temperature. These findings point toward implementing low-cost, flexible materials for amplified imaging at ultralow light levels. | en_GB |
dc.description.sponsorship | S.R. and M.F.C. acknowledge financial support from EPSRC (Grant 464 Nos. EP/J000396/1, EP/K017160/1, EP/K010050/1, EP/G036101/1, EP/M001024/1, and 465 EP/M002438/1), from Royal Society international Exchanges Scheme 2012/R3 and 466 2013/R2 and from European Commission (No. FP7-ICT-2013-613024-GRASP). | en_GB |
dc.identifier.citation | Published online 25 September 2017 | en_GB |
dc.identifier.doi | 10.1002/adma.201702993 | |
dc.identifier.uri | http://hdl.handle.net/10871/29560 | |
dc.language.iso | en | en_GB |
dc.publisher | Wiley | en_GB |
dc.rights | © 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | en_GB |
dc.title | Highly Efficient Rubrene–Graphene Charge-Transfer Interfaces as Phototransistors in the Visible Regime | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2017-09-27T09:55:26Z | |
dc.identifier.issn | 0935-9648 | |
exeter.article-number | 1702993 | en_GB |
dc.description | This is the final version of the article. Available from Wiley via the DOI in this record. | en_GB |
dc.identifier.journal | Advanced Materials | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ |
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Except where otherwise noted, this item's licence is described as © 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.