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14 GHz schottky diodes using a p-doped organic polymer.

Title: 14 GHz schottky diodes using a p-doped organic polymer.
Authors: Loganathan, K
Scaccabarozzi, AD
Faber, H
Ferrari, F
Bizak, Z
Yengel, E
Naphade, DR
Gedda, M
He, Q
Solomeshch, O
Adilbekova, B
Yarali, E
Tsetseris, L
Salama, KN
Heeney, M
Tessler, N
Anthopoulos, TD
Item Type: Journal Article
Abstract: The low carrier mobility of organic semiconductors and the high parasitic resistance and capacitance often encountered in conventional organic Schottky diodes, hinder their deployment in emerging radio frequency (RF) electronics. Here we overcome these limitations by combining self-aligned asymmetric nanogap electrodes (∼25 nm) produced by adhesion-lithography, with a high mobility organic semiconductor and demonstrate RF Schottky diodes able to operate in the 5G frequency spectrum. We used C16 IDT-BT, as the high hole mobility polymer, and studied the impact of p-doping on the diode performance. Pristine C16 IDT-BT-based diodes exhibit maximum intrinsic and extrinsic cutoff frequencies (fC ) of >100 and 6 GHz, respectively. This extraordinary performance is attributed primarily to the planar nature of the nanogap channel and the diode's small junction capacitance (< 2 pF). Doping of C16 IDT-BT with the molecular p-dopant C60 F48 , improves the diode's performance further by reducing the series resistance resulting to intrinsic and extrinsic fC of >100 and ∼14 GHz respectively, while the DC output voltage of a RF rectifier circuit increases by a tenfold. Our work highlights the importance of the planar nanogap architecture and paves the way for the use of organic Schottky diodes in large-area radio frequency electronics of the future. This article is protected by copyright. All rights reserved.
Issue Date: 6-Jan-2022
Date of Acceptance: 1-Dec-2021
URI: http://hdl.handle.net/10044/1/93636
DOI: 10.1002/adma.202108524
ISSN: 0935-9648
Publisher: Wiley
Start Page: 1
End Page: 8
Journal / Book Title: Advanced Materials
Volume: 34
Issue: 22
Copyright Statement: © 2022 Wiley-VCH GmbH. This is the accepted version of the following article: Loganathan, K., Scaccabarozzi, A. D., Faber, H., Ferrari, F., Bizak, Z., Yengel, E., Naphade, D. R., Gedda, M., He, Q., Solomeshch, O., Adilbekova, B., Yarali, E., Tsetseris, L., Salama, K. N., Heeney, M., Tessler, N., Anthopoulos, T. D., 14 GHz Schottky Diodes Using a p-Doped Organic Polymer. Adv. Mater. 2022, 34, which has been published in final form at https://doi.org/10.1002/adma.202108524
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
organic semiconductor
printed electronics
radio frequency electronics
rectifier circuits
Schottky diodes
TRANSISTORS
EFFICIENCY
TRANSPORT
Schottky diodes
organic semiconductor
printed electronics
radio frequency electronics
rectifier circuits
Organic semiconductor
Schottky diodes
printed electronics
radio frequency electronics
rectifier circuits
02 Physical Sciences
03 Chemical Sciences
09 Engineering
Nanoscience & Nanotechnology
Publication Status: Published
Conference Place: Germany
Open Access location: https://onlinelibrary.wiley.com/doi/10.1002/adma.202107355
Online Publication Date: 2022-01-06
Appears in Collections:Physics
Chemistry
Experimental Solid State
Faculty of Natural Sciences