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The effect of the dopant's reactivity for high-performance 2D MoS2 thin-film transistor

Nano Research 2021年第1期14卷 198-204页

作者： Hanleem Lee sora bak Joosung Kim Hyoyoung Lee Center for Integrated Nanostructure Physics(CINAP) Institute for Basic Science(IBS)Suwon 16419Republic of Korea Department ofChem istryy Sungkyunkwan University Suwon 16419Republic of Korea Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Biophysics Sungkyunkwan UniversitySuwon 16419Republic of Korea

There are many studies on the solution-processed thin-film transistor(TFT)using transition metal dichalcogenide(TMD)***,it is hard to control the electrical property of chemically exfoliated TMD materials compared to the chemical vapor deposition *** investigation into the electrical modulation behavior of exfoliated two-dimensional(2D)material is important tofabricate weH-modulated electronic devices via solution ***,we report the effects of reactivity of organic dopants on MoS2 and investigate how the chemical doping behavior influences the electrical properties of *** band state of dopants,which is related to the electron-withdrawing and donating behavior of chemical dopant,provides a proportional shift in the threshold voltages(Vth)of their field-effect transistors(FETs).However,on/off current ratio(Ion/Ioff)and mobility(μ)are strongly influenced by the defect density depending on the reactivity of doping reaction,rather than the band state of organic *** the in-depth study on the doping reaction,we fabricate a FET and a TFT,having high mobility and a relatively high on/off ratio(10^(4))using a solution process.

关键词： 2D materials functionalization thin-film transistor doping defect

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Hybrid windshield-glass heater for commercial vehicles fabricated via enhanced electrostatic interactions among a substrate, silver nanowires, and an over-coating layer

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Nano Research 2015年第6期8卷 1882-1892页

作者： Sae Mi Lee Ji Hun Lee sora bak Keunsik Lee Yang Li Hyoyoung Lee 2066 Seoburo Jangan-gu Center for Smart Molecular Memory Department of Chemistry Sungkyunkwan University Suwon 440-746 Republic of Korea 2066 Seoburo Jangan-gu Center for Smart Molecular Memory Department of Energy Science Sungkyunkwan University Suwon 440-746 Republic of Korea 2066 Seoburo Jangan-gu Center for Smart Molecular Memory SKKU Advanced Institute of Nano Technology (SAINT) Sungkyunkwan University Suwon 440-746 Republic of Korea

We introduce a transparent windshield-glass heater produced via transparent electrodes using silver nanowire （AgNW） networks for conventional use in the automobile industry. A high-quality conducting hybrid film is deposited on a plasma-treated glass substrate by spraying AgNWs, immersing the sprayed product in positively charged adhesive polymer solution, and then spraying negatively charged graphene oxide （GO） and a silane layer as an over-coating layer （OCL）.The results of heating tests conducted after adhesion tests show that the sheet resistance changes with the application of polymer glue. Surprisingly, the transmittance of the film with the GO OCL is higher than that of the film without the GO OCL. Heating and defrosting tests are carefully conducted via infrared （IR） monitoring. Adhesive-polymer-treated and GO-protected AgNW transparent glass heaters exhibit the best performance with low sheet resistance; thus, through strong electrostatic interaction among the substrate, adhesive layer, and OCL, our AgNW hybrid glass heater can reach the target temperature with a standard vehicle voltage of 12 V in a short period of time.

关键词： transparentwindshield-glass heater silver nanowires heating glass adhesive polymers material science

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