Improving the linearity of synaptic plasticity of single-walled carbon nanotube field-effect transistors via CdSe quantum dots decoration. (23rd April 2023)

• Record Type: Journal Article
• Authors: Zhang, Yantao; Wang, Zhong; Liu, Jia; Wan, Xianjie; Yu, Zhou; Zhang, Guohe; Han, Chuanyu; Li, Xin; Liu, Weihua
• Is Part Of: Nanotechnology. Volume 34:Number 17(2023)
• Publication Date: 2023-04-23
• Subjects: SWCNT FET -- CdSe quantum dot -- synaptic plasticity -- linearity -- charging process; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/acb555
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: The linearity of synaptic plasticity of single-walled carbon nanotube field-effect transistor (SWCNT FET) was improved by CdSe quantum dots decoration. The linearity of synaptic plasticity in SWCNT FET with decorating QDs was further improved by reducing the P-type doping level from the atmosphere. The synaptic behavior of SWCNT FET is found to be dominated by the charging and discharging processes of interface traps and surface traps, which are predominantly composed of H2 O/O2 redox couples. The improved synaptic behavior is mainly due to the reduction of the interface trap charging process after QDs decoration. The inherent correlation between the device synaptic behavior and the electron capture process of the traps are investigated through charging-based trap characterization. This study provides an effective scheme for improving linearity and designing new-type SWCNT synaptic devices.