Nonvolatile Memory Thin-Film Transistors Using Biodegradable Chicken Albumen Gate Insulator and Oxide Semiconductor Channel on Eco-Friendly Paper Substrate

Kim, Sojung; Jeon, Da-Bin; Park, Jung Ho; Ryu, Min-Ki; Yang, Jong‐Heon; Hwang, Chi‐Sun; Kim, Gi‐Heon; Yoon, Sung‐Min

doi:10.1021/am508834y

Cited by 36 publications

(42 citation statements)

References 13 publications

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“…114,155 Since standard PI exhibits a yellowish to brownish color, other polymeric substrates have been introduced to benefit from their transparency in the visual wavelength range. These materials, which are, in general, also cheaper and more easily available, include PET, 29,69,96,165,171,180,184,188 polyethylene naphthalate (PEN), 38,40,41,134,136,139,149,153,158,163,[166][167][168]173,181,202 polyetheretherketone (PEEK), 203 polycarbonate (PC), 154,157 polypropylene (PP) based synthetic paper, 204 parylene, 80,141 polyethersulfone (PES), 178 water-soluble polyvinyl alcohol (PVA), 82 as well as polydimethylsiloxane (PDMS). 78,132,147,[205][206][207] In particular, PDMS is also stretchable and biocompatible, but at the same time hard to process using standard fabrication techniques.…”

Section: Methodsmentioning

confidence: 99%

“…8. 204 A fourth class of gate dielectric materials is constituted by solid electrolytes (e.g., phosphorus (P)-doped SiO 2 ), which are characterized by high specific gate dielectric capacitance per unit area (C ox ) and therefore low-voltage device operation. 184,189 This improvement is generally ascribed by a redistribution of mobile ions with the applied voltage.…”

Section: Methodsmentioning

confidence: 99%

“…10 displays the corresponding transfer characteristics showing that although the work function of the various gate metals is different, their influence on the electrical performance of IGZO TFTs is minor. 84 Consequently, a variety of different metals: silver (Ag), 189 Al, 59,132,149,153,174,178,202,204 Au, 38,136,167 Cr, 155 and tantalum nitride (TaN) metal alloys have been used as gate contacts. 154,157,170 Especially for BG TFTs, the adhesion of the gate contact to the flexible substrate appears to be the main concern.…”

Section: à2mentioning

confidence: 99%

“…At the same time, a big variety of multi-layer contacts have been developed to combine the advantageous properties of different materials; recent examples are: Ti/ Au, 59,69,81,84,113,140,141,143,146,150,151,[181][182][183] Ni/Au, 79 Mo/ Al, 166,173 Cr/Au, 114 Mo/AlNd, 156 Cr/Au/Cr, 92 Mo/Al/Mo, 153 Ti/Au/Ti, 162 or Ti/IZO. 142 Regarding transparent source/drain contacts, only ITO 29,78,80,106,139,155,158,177,180,188,189,202,204,205 and IZO have been used. 160,171,184 Finally, contacts based on Ti (drain) and graphene (source) in combination with a VTFT structure have been published.…”

Section: à2mentioning

confidence: 99%

“…40,41,132,136,139,153,[158][159][160]163,[166][167][168][169][170]173,174,202,204 This can either be done using native adhesion forces or utilizing an additional adhesive. Alternatively, a flexible foil can also be mechanically fixed on particularly designed holders using metallic clamps.…”

Section: Fabrication Techniquesmentioning

confidence: 99%

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: à2mentioning

confidence: 99%

Section: à2mentioning

confidence: 99%

Section: Fabrication Techniquesmentioning

confidence: 99%

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Water‐Based Photo‐ and Electron‐Beam Lithography Using Egg White as a Resist

Jiang

Yang

et al. 2017

Adv Materials Inter

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human life. [1][2][3] To achieve such a dream, choosing natural biomaterials such as nucleic acids, [4][5][6] peptides, [7] proteins, [8,9] and polysaccharides [10] as the substitutes of fossil source-based synthetic chemicals is a promising way. Correspondingly, micro/ nanoscale fabrication on natural biomaterials receives great of importance, [11] and a spatially definable property with high precision to exactly position biomaterials on a surface is highly desirable [12][13][14][15][16][17][18] toward biodegradable and biocompatible green electronic, [19][20][21][22] optical, [23][24][25][26][27][28][29] sensor, [30] energy, [31] and environmental devices. [32] Typical examples down this road include silk fibroin, [12][13][14] polysaccharides, [10] and DNA origami-mediated lithography. [5] These approaches are part of great efforts to develop "green" lithographic processing in semiconductor industry that is eligible to lessen the exposure of workers and environment toward noxious chemical and reduce waste. [13] The adoption of these strategies allows the replacement of organic solvent with water to cast and develop a resist, accompanied with the exclusion of environmentally harmful components from material processing and fabrication. However, so far the lithographic processes based on existing natural biomaterials are difficult to be exploited in scale-up industrial application, because their limited quantities, high material, and processing cost as well as small deposition area impede the practical engineering of these biomaterials. [9] Moreover, the less-controlled variation on polymorph and polydispersity of biomaterials often influences the repeatability of results. [33] Recently, our group reported the use of phase-transited lysozyme nanofilm as the resist for photolithography and electron-beam lithography (EBL), with the cost being decreased and practical applicability being potentially demonstrated. [17] Continuous efforts along this way further require much cheaper material and simpler fabrication process for large-scale industrial uses. In this respect, we pay attention to egg white due to the following reasons. First, egg white is a very common natural biomaterial just taken from egg as our daily food, which makes it has great natural abundance with a low cost. Second, in contrast to other natural competitors usually requiring strict demands on the purity, polydispersity, and polymorph stability, egg white is a combination of multiple functional nutrients, [34] which could be directly utilized without further purification and Complex lithographic steps and the use of toxic chemicals in these processes are in conflict with a sustainable human society. Development of new inexpensive and green resist, simple alternative procedures, and nontoxic solvents is the key to move recyclable micro/nanofabrication from laboratory level to industrial application in large scale. Herein, precise control on protein fragmentation/aggregation upon photo/electron irradiation is conceived into egg white-based green resist...

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Control of Gold Nanoparticle–Protein Aggregates in Albumen Matrix for Configurable Switching Devices

Kim

Hwang

Lee

2018

Adv Materials Inter

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advantages of low-cost fabrication, disposability, and biocompatibility. [10] In particular, proteins have electrochemical properties, and therefore show promise in bioelectronic applications. Several groups have used proteins as the insulating layer in ReRAM. [7,[11][12][13] Albumen has recently been evaluated as a candidate for next-generation nonvolatile memory devices. [14,15] It has the advantages that it can be obtained directly from egg without extraction or further processing. Also, albumen has been applied as an insulating layer or dielectric layer to fabricate RS memory devices and thinfilm transistors. [9,16] Fe ions in the albumen form trap sites for electron transfer. If sufficient electrical bias is applied, reduced Fe ions form a conductive filament, so the albumen assumes LRS; then if sufficient opposite bias is applied, the Fe ions are oxidized, and the conductive filament ruptures, so the albumen assumes HRS. The presence of this RS effect suggests that albumen may be usable as an active layer in RS memory. Additionally, further improvement of the device's memory characteristics, such as reduced set voltage V SET and reset voltage V RESET or uniform switching properties, has been achieved by using ferritin protein to embed Pt nanoparticles (NPs) in NiO structure. [17] Also, embedding Au NPs in a silk protein layer reduced the V SET and V RESET of a ReRAM device. [18] In this study, we mixed Au NPs with albumen to improve its RS behavior. The charge-trapping characteristics of Au NPs were expected to reduce V SET and V RESET and give wide memory windows. [19] The use of protein-nanoparticle (P-NP) suspensions as memory has the disadvantage that the proteins interact and agglomerate with Au NPs in the solution, so the RS property in the fabricated memory devices changes. Therefore, controlling the degree of agglomeration is a key requirement to control the RS behaviors of ReRAM devices based on albumen with Au NPs. Proteins of albumen consist of amino chains that include sulfhydryl groups (R-SH), which can react with Au NPs and cause agglomeration; as a result, the memory characteristic changes from programmable RS to read-only memory. [11,20,21] Here, we characterize the RS behaviors of ReRAM based on albumen with Au NPs. We report how proteins interact with Au NPs to form clusters and affect the RS. We also suggest a switching mechanism of Au NPs-embedded protein-based ReRAM. This work is a significant step toward fabrication of biocompatible ReRAMs for configurable memory devices by controlling agglomeration of metal NPs in protein.Protein-nanoparticle (P-NP) interactions are of great importance in the biomedical applications, and are extensively studied for biotechnology and biomedicine applications, for example, cancer therapy, drug delivery, as well as biosafety area. Here, it is shown that P-NP interactions can have applications as resistive memory. It is demonstrated that the nature of resistive switching changes from programmable memory to read-only memory when the NPs aggregate in the pr...

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Nonvolatile Memory Thin-Film Transistors Using Biodegradable Chicken Albumen Gate Insulator and Oxide Semiconductor Channel on Eco-Friendly Paper Substrate

Cited by 36 publications

References 13 publications

Metal oxide semiconductor thin-film transistors for flexible electronics

Metal oxide semiconductor thin-film transistors for flexible electronics

Water‐Based Photo‐ and Electron‐Beam Lithography Using Egg White as a Resist

Control of Gold Nanoparticle–Protein Aggregates in Albumen Matrix for Configurable Switching Devices

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