Light/electric modulated approach for logic functions and artificial synapse behaviors by flexible IGZO TFTs with low power consumption

Author(s):  
Liqiang Guo ◽  
Guifa Zhang ◽  
Hui Han ◽  
Yongbin Hu ◽  
Guanggui Cheng

Abstract In recent years, low power electronic devices have attracted more and more interests. Here, flexible thin-film transistors(TFTs) with In-Ga-Zn-O (IGZO) as semiconductor channel material were fabricated on polyethylene terephthalate (PET) substrates. The device exhibits good electrical properties at low operating voltage, including high on/off ratio of ~ 7.8 × 106 and high electron mobility of ~ 23.1 cm2V-1s-1. The device also has excellent response characteristics to visible light. With the increase of visible light intensity, the threshold voltage of IGZO TFTs decreases continuously, but the electron mobility increases gradually. Based on the unique response ability of the device to light, we proposed and demonstrated that a single thin-film transistor can realize different logic operations under the light/electricity mixed modulation, including “AND” and “OR”. In addition, we also simulated some basic artificial synaptic behaviors, including excitatory postsynaptic current and paired-pulse facilitation. Thus, IGZO TFTs operating at low voltages not only have the potential to construct multifunctional optoelectronic devices, but also provide a new idea for simplifying the design of programmable logic circuits.

1991 ◽  
Vol 70 (1) ◽  
pp. 529-531 ◽  
Author(s):  
Enrico Zanoni ◽  
Alessandro Paccagnella ◽  
Pietro Pisoni ◽  
Paolo Telaroli ◽  
Carlo Tedesco ◽  
...  

2021 ◽  
Vol 23 (09) ◽  
pp. 1078-1085
Author(s):  
A. Kanni Raj ◽  

Indium Lead Oxide (ILO) based Metal Oxide Thin Film Transistor (MOTFT) is fabricated with Lead Barium Zirconate (PBZ) gate dielectric. PBZ is formed over doped silicon substrate by cheap sol-gel process. Thin film PBZ is analysed with X-ray Diffraction (XRD), Ultra-Violet Visible Spectra (UV-Vis) and Atomic Force Microscope (AFM). IZO is used as bottom gate to contact Thin Film Transistor (TFT). This device needs only 5V as operating voltage, and so is good for lower electronics <40V. It shows excellent emobility 4.5cm2/V/s, with on/off ratio 5×105 and sub-threshold swing 0.35V/decade.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Tsung-Ta Wu ◽  
Wen-Hsien Huang ◽  
Chih-Chao Yang ◽  
Hung-Chun Chen ◽  
Tung-Ying Hsieh ◽  
...  

2013 ◽  
Vol 1530 ◽  
Author(s):  
Neha Batra ◽  
Monika Tomar ◽  
Vinay Gupta

ABSTRACTZinc oxide (ZnO) thin film deposited onto indium tin oxide (ITO) coated Corning glass substrates using pulsed laser deposition (PLD) technique has been used as a matrix for realization of an efficient urea biosensor after immobilization of urease (Urs) enzyme onto the surface of ZnO. The bioelectrode (Urs/ZnO/ITO/glass) is found to be exhibiting an enhanced sensitivity of 22μΑmΜ−1cm−2 towards urea over a wide detection range of 5-200 mg/dl. The relatively low value of Michaelis menten constant (Km= 0.94mM) indicates high affinity of the immobilized urease towards the analyte (urea). The prepared biosensor retains 90% of its activity for more than 10 weeks. The observed enhanced response characteristics of bioelectrode are attributed to the growth of the matrix (highly c-axis oriented ZnO thin film) with desired surface morphology and high electron communication feature. The results confirm the promising application of PLD grown ZnO thin film as an efficient matrix for urea detection.


2014 ◽  
Vol 15 (11) ◽  
pp. 2749-2755 ◽  
Author(s):  
Jin-Peng Yang ◽  
Qi-Jun Sun ◽  
Keiichirou Yonezawa ◽  
Alexander Hinderhofer ◽  
Alexander Gerlach ◽  
...  

2017 ◽  
Vol 26 (1) ◽  
pp. 017304
Author(s):  
Ling Yang ◽  
Xiao-Wei Zhou ◽  
Xiao-Hua Ma ◽  
Ling Lv ◽  
Yan-Rong Cao ◽  
...  

Author(s):  
Chi-Hsin Huang ◽  
Yalun Tang ◽  
Tzu-Yi Yang ◽  
Yu-Lun Chueh ◽  
Kenji Nomura

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