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Reconfigurable doping of atomically thin van der Waals semiconductors by light colours

Title
Reconfigurable doping of atomically thin van der Waals semiconductors by light colours
Authors
JO, MOON HOSEO, SEUNGYOUNGGUNHO, MOONODONGO, FRANCIS NGOME OKELLOPARK, MIN YOUNGCHEOLHEE, HANSoonyoung ChaHyunyong ChoiYEOM, HAN WOONGCHOI, SI YOUNGJewook Park
Date Issued
2020-09-18
Publisher
Korean Graphene Society
Abstract
We report reversible photo-induced doping on atomically thin van der Waals (vdW) semiconductors, whose channel polarities can be repeatedly reconfigured from n-type to p-type and vice versa with light colours. Evidently, this reconfigurable doping is explained by selective light-lattice interactions, such as the characteristic point defect generations and the charged ion incorporation. The precise doping tunability in a reconfigurable manner of this work may provide a key technological solution toward realisation of new types of monolithic integrated circuitry on atomically thin vdW semiconductors. We demonstrate such a proof-of-concept device, a reconfigurable complementary metal-oxide-semiconductor (CMOS) device on a single vdW semiconductor channel, in which the circuit functions can be dynamically reset from a CMOS inverter to a CMOS switch with the choice of light colours.
URI
https://oasis.postech.ac.kr/handle/2014.oak/105970
Article Type
Conference
Citation
제 7회 한국그래핀/2차원소재 심포지엄, 2020-09-18
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조문호JO, MOON HO
Dept of Materials Science & Enginrg
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