Please use this identifier to cite or link to this item: https://doi.org/10.1109/JSEN.2020.2966547
Title: Aerosol Jet Printed WSe2 Crossbar Architecture Device on Kapton With Dual Functionality as Resistive Memory and Photosensor for Flexible System Integration
Authors: LI YIDA 
FENG XUEWEI 
TANG BAOSHAN 
WANG XINGHUA 
Ang Kay Wee 
THEAN VOON YEW, AARON 
Keywords: Aerosol Jet Printer, WSe2, 2D materials, Crossbar Architecture, RRAM
Issue Date: 14-Jan-2020
Publisher: IEEE
Citation: LI YIDA, FENG XUEWEI, TANG BAOSHAN, WANG XINGHUA, Ang Kay Wee, THEAN VOON YEW, AARON (2020-01-14). Aerosol Jet Printed WSe2 Crossbar Architecture Device on Kapton With Dual Functionality as Resistive Memory and Photosensor for Flexible System Integration. IEEE Sensors Journal 20 (9) : 4653-4659. ScholarBank@NUS Repository. https://doi.org/10.1109/JSEN.2020.2966547
Rights: CC0 1.0 Universal
Abstract: We report on a room temperature Aerosol Jet printed two-terminal WSe2 crossbar architecture device on flexible substrate that achieves dual functionality of both a resistive random access memory (ReRAM), as well as a photosensor. As a ReRAM, the silver contacted WSe 2 device exhibits forming free, sub 1-V switching voltage, and an on-off ratio of 2 orders. Furthermore, the WSe 2 ReRAM exhibits both volatile and non-volatile switching behavior with a transition set current of 2 μA, translating to a low operating power of 16 μW. As a photosensor with the same architecture, the transparent CNT electrodes contacted device allows incident light to pass through for photocurrent generation. The two terminals device allows photo sensitivity to be tuned by bias application. In such mode, a maximum photo responsivity of 1 A/W at a visible light wavelength of 660 nm is exhibited by the device at a bias of 1 V, allowing weak light signals to be amplified. In both cases, the WSe 2 device retains its functionality even after bending down to a radius of 5 cm. The fabrication process can be up-scaled and has great potential to be used for conformal electronics system integration.
Source Title: IEEE Sensors Journal
URI: https://scholarbank.nus.edu.sg/handle/10635/192011
ISSN: 15581748
DOI: 10.1109/JSEN.2020.2966547
Rights: CC0 1.0 Universal
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