Organic Field Effect Transistor using BaTiO3-Mn Doped and P(VDF-TrFE) for Non Volatile Memory Application

2008 ◽  
Vol 1071 ◽  
Author(s):  
Sambit Pattnaik ◽  
Ashish Garg ◽  
Monica Katiyar

AbstractHere, we report fabrication of an organic field effect transistor that can be used as a memory device. We have evaluated inorganic ferroelectric insulator manganese doped barium titanate(BTO), organic poly(vinylidene fluoride trifluoroethylene) P(VDF-TrFE), and their composite. The inorganic and organic ferroelectrics were fabricated using low cost process of spin coating followed by annealing to enhance crystallinity. The ferroelectric phase evolution is assessed by X-ray diffraction, MIM structure is used to study polarization behaviour and leakage current. Finally, OFETs are fabricated using thermal evaporation of 75 nm of pentacene. Gold electrodes of 70 nm were evaporated for the top contact devices keeping W/L=40. The OFET devices, for BTO/P(VDF-TrFE) composite insulator, showed memory effect with shift in threshold voltage of 8.5 ± 1.5V.

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 301
Author(s):  
Young Jin Choi ◽  
Jihyun Kim ◽  
Min Je Kim ◽  
Hwa Sook Ryu ◽  
Han Young Woo ◽  
...  

Donor–acceptor-type organic semiconductor molecules are of great interest for potential organic field-effect transistor applications with ambipolar characteristics and non-volatile memory applications. Here, we synthesized an organic semiconductor, PDPPT-TT, and directly utilized it in both field-effect transistor and non-volatile memory applications. As-synthesized PDPPT-TT was simply spin-coated on a substrate for the device fabrications. The PDPPT-TT based field-effect transistor showed ambipolar electrical transfer characteristics. Furthermore, a gold nanoparticle-embedded dielectric layer was used as a charge trapping layer for the non-volatile memory device applications. The non-volatile memory device showed clear memory window formation as applied gate voltage increases, and electrical stability was evaluated by performing retention and cycling tests. In summary, we demonstrate that a donor–acceptor-type organic semiconductor molecule shows great potential for ambipolar field-effect transistors and non-volatile memory device applications as an important class of materials.


2018 ◽  
Vol 56 ◽  
pp. 170-177 ◽  
Author(s):  
Stuart Hannah ◽  
Alan Davidson ◽  
Ivan Glesk ◽  
Deepak Uttamchandani ◽  
Ravinder Dahiya ◽  
...  

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Chih-Ting Lin ◽  
Chun-Hao Hsu ◽  
Chang-Hung Lee ◽  
Wen-Jung Wu

Poly(3-hexylthiophene), P3HT, has been widely used in organic electronics as a semiconductor material. It suffers from the low carrier mobility characteristics. This limits P3HT to be employed in applications. Therefore, the blending semiconductor material, carbon nanoparticle (CNP), and P3HT, are developed and examined by inkjet-printing organic field-effect transistor technology in this work. The effective carrier mobility of fabricated OFETs can be enhanced by 8 folds with adding CNP and using O2plasma treatment. At the same time, the transconductance of fabricated OFETs is also raised by 5 folds. Based on the observations of SEM, XRD, and FTIR, these improvements are contributed to the local field induced by the formation of CNP/P3HT complexes. This observation presents an insight of the development in organic semiconductor materials. Moreover, this work also offers a low-cost and effective semiconductor material for inkjet-printing technology in the development of organic electronics.


Technologies ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 77 ◽  
Author(s):  
Hiroyuki Furusawa ◽  
Yusuke Ichimura ◽  
Kuniaki Nagamine ◽  
Rei Shiwaku ◽  
Hiroyuki Matsui ◽  
...  

Sensor devices that can be fabricated on a flexible plastic film produced at a low cost using inkjet-printing technology are suitable for point-of-care applications. An organic field-effect transistor (OFET)-based biosensor can function as a potentiometric electrochemical sensor. To investigate the usefulness of an OFET-based biosensor, we demonstrated the detection of 1,5-anhydroglucitol (1,5-AG) and glucose, which are monosaccharides used as biomarkers of diabetes. An OFET-based biosensor combined with a Prussian blue (PB) electrode, modified with glucose oxidase (GOx) or pyranose oxidase (POx), was utilized for the detection of the monosaccharides. When the GOx- or POx-PB electrode was immersed in glucose solution at the determined concentration, shifts in the low-voltage direction of transfer characteristic curves of the OFET were observed to be dependent on the glucose concentrations in the range of 0–10 mM. For 1,5-AG, the curve shifts were observed only with the POx-PB electrode. Detection of glucose and 1,5-AG was achieved in a substrate-specific manner of the enzymes on the printed OFET-biosensor. Although further improvements are required in the detection concentration range, the plastic-filmOFET-biosensors will enable the measurement of not only diabetes biomarkers but also various other biomarkers.


Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 753
Author(s):  
Wenting Zhang ◽  
Xiaoxing Guo ◽  
Jinchao Yin ◽  
Jianhong Yang

In this work, we present a pentacene-based organic field-effect transistor memory (OFETM) device, which employs one-step microwave-assisted hydrothermal carbon quantum dots (CQDs) embedded in a polyvinyl pyrrolidone (PVP) matrix, to form an integrated hybrid nanolayer as the charge trapping layer. The as-prepared CQDs are quasi-spherical amorphous C, with sizes ranging from 5 to 20 nm, with a number of oxygen-containing groups and likely some graphite-like domains that produce CQDs with excellent electron-withdrawing characteristics. The incorporation of CQDs into PVP dielectric materials results in a bidirectional storage property. By optimizing the concentration of CQDs embedded into the PVP matrix, the OFETM shows excellent memory characteristics with a large memory window of 8.41 V under a programming/erasing (P/E) voltage of ± 60 V and a retention time of up to 104 s.


2011 ◽  
Vol 60 (12) ◽  
pp. 127304
Author(s):  
Nie Guo-Zheng ◽  
Peng Jun-Biao ◽  
Zhou Ren-Long

ACS Photonics ◽  
2021 ◽  
Author(s):  
Haripriya Kesavan ◽  
Subhamoy Sahoo ◽  
Sanjoy Jena ◽  
Jayeeta Bhattacharyya ◽  
Debdutta Ray

Author(s):  
Raka Ahmed ◽  
Arun Manna

Air-stable perylenediimide (PDI) and its derivatives, in particularly the cyano-functionalized ones have attracted great research attention for their potential use in flexible optoelectronics, organic field-effect-transistor (OFET) as n-type transport materials...


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