Roll-to-roll gravure printed large-area flexible carbon nanotube synaptic photogating transistor arrays for image recognitions

被引:12
|
作者
Wang, Suyun [1 ,2 ,3 ]
Wang, Qinan [4 ]
Li, Min [2 ,3 ]
Fang, Yuxiao [2 ,3 ]
Shao, Shuangshuang [2 ,3 ]
Xie, Tanghao [2 ,3 ]
Zhao, Chun [4 ]
Liang, Lijuan [1 ]
Zhao, Jianwen [2 ,3 ]
机构
[1] Beijing Inst Graphic Commun, Sch Printing & Packaging Engn, Beijing 102627, Peoples R China
[2] Chinese Acad Sci, Suzhou Inst Nanotech & Nanob, Printable Elect Res Ctr, Div Nanodevices & Related Nanomat, 398 Ruoshui Rd,SEID,Suzhou Ind Pk, Suzhou 215123, Peoples R China
[3] Univ Sci & Technol China, Sch Nano Technol & Nano Bionics, Hefei 230026, Peoples R China
[4] Xian Jiaotong Liverpool Univ, Dept Elect & Elect Engn, Suzhou 215123, Peoples R China
基金
中国国家自然科学基金;
关键词
Large-area; Flexible optoelectronic synaptic devices; R2R; Low power consumption; Generative adversarial network (GAN); FILM;
D O I
10.1016/j.nanoen.2023.108698
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The development of novel large-area flexible optoelectronic synaptic devices is of great interest for visual neuromorphic computing. In this paper, we have successfully manufactured 33 x 34 flexible carbon nanotube synaptic photogating transistor arrays via the roll-to-roll gravure printing technology using the mixture of photosensitive rhodamine 6G and poly(vinylidene fluoride-co-hexa-fluoropropylene) as the composite dielectric layer. The resulting thin-film transistor devices exhibit excellent electrical properties with high I-on/I-off (>10(5)), the maximum carrier mobility (10.71 cm(2)V(-1)s(-1)) and low operating voltage ( -1.5 V similar to 0.5 V), and excellent optoelectronic synaptic properties, which are capable of performing not only the excitatory postsynaptic current and paired pulse facilitation but also complex biological synaptic functions such as optical writing and electrical erasure, dynamic learning and forgetting processes, and Pavlov's dog experiment. Significantly, the ultralow energy consumption per light spike event as low as 0.03 fJ can be achieved under the pulse UV light illumination. Moreover, according to the trend that the LTP/LTD curve conforms to the concave function, we successfully embed the specific update rules of our synaptic devices into the generative adversarial network (GAN) that can generate high-quality (7680 x 4096 pixels) images, which is impossible for the human eye to distinguish the difference between the original labels and real labels.
引用
收藏
页数:12
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