Microcontact Printing of Ultrahigh Density Gold Nanoparticle Monolayer for Flexible Flash Memories

Han, Su‐Ting; Zhou, Ye; Xu, Zong‐Xiang; Huang, Long‐Biao; Yang, Xiya; Roy, V. A. L.

doi:10.1002/adma.201201195

Cited by 146 publications

(155 citation statements)

References 33 publications

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“…Possible charge loss may occur in the nanocomposite film from the nanocrystals to active channel. However, the degradation of retention properties of our memory device is not severe due to the long-chain organic ligand covering the nanocrystals and the large band gap NaYF 4 shell, which can form an insulating barrier to prevent the diffusion of the trapped charge carriers 52 .…”

Section: Resultsmentioning

confidence: 99%

An upconverted photonic nonvolatile memory

et al. 2014

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Conventional flash memory devices are voltage driven and found to be unsafe for confidential data storage. To ensure the security of the stored data, there is a strong demand for developing novel nonvolatile memory technology for data encryption. Here we show a photonic flash memory device, based on upconversion nanocrystals, which is light driven with a particular narrow width of wavelength in addition to voltage bias. With the help of near-infrared light, we successfully manipulate the multilevel data storage of the flash memory device. These upconverted photonic flash memory devices exhibit high ON/OFF ratio, long retention time and excellent rewritable characteristics.

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Section: Resultsmentioning

confidence: 99%

An upconverted photonic nonvolatile memory

et al. 2014

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“…In particular, high-performance flexible non-volatile memories based on various data storage principles such as resistive type [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] , flash 4,[25][26][27][28][29] and ferroelectric [30][31][32][33][34][35][36][37][38][39][40] hold great promise in a variety of emerging applications ranging from mobile computing to information management and communication. While the recent advances in this area are impressive, novel organic materials and electronic device structures that can be tightly rolled, crumpled, stretched, sharply folded and unfolded repeatedly without any performance degradation still need to be developed.…”

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confidence: 99%

Non-volatile organic memory with sub-millimetre bending radius

et al. 2014

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High-performance non-volatile memory that can operate under various mechanical deformations such as bending and folding is in great demand for the future smart wearable and foldable electronics. Here we demonstrate non-volatile solution-processed ferroelectric organic field-effect transistor memories operating in p-and n-type dual mode, with excellent mechanical flexibility. Our devices contain a ferroelectric poly(vinylidene fluoride-cotrifluoroethylene) thin insulator layer and use a quinoidal oligothiophene derivative (QQT(CN)4) as organic semiconductor. Our dual-mode field-effect devices are highly reliable with data retention and endurance of 46,000 s and 100 cycles, respectively, even after 1,000 bending cycles at both extreme bending radii as low as 500 mm and with sharp folding involving inelastic deformation of the device. Nano-indentation and nano scratch studies are performed to characterize the mechanical properties of organic layers and understand the crucial role played by QQT(CN)4 on the mechanical flexibility of our devices.

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“…In recent years, μCP was modified to increase pattern homogeneity and to imprint functional materials such as polymers [68], metals [69], nanoparticles [70], proteins [71], lipids [72], and DNA [73] on inorganic and polymer substrates [68]. Among new techniques, Supramolecolar Contact Printing uses μCP to immobilize receptor molecules able to selectively physisorb enzymes, proteins, and cells.…”

Section: Advanced Nil Techniquesmentioning

confidence: 99%

Nanoimprint Lithography: Toward Functional Photonic Crystals

Lova

Soci

2015

Organic and Hybrid Photonic Crystals

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In this chapter we review the use of nanoimprint lithography and its derivative soft-lithography techniques for the fabrication of functional photonic crystals. Nanoimprint is a viable, scalable, and cost-effective solution for large area patterning. While initially it relied primarily on pattern transfer from a rigid mold to a thermally softened polymer by embossing, in the last two decades the process evolved rapidly, giving rise to new technologies that allow direct imprint of functional materials such as conjugated polymers, metals, biological matter, and metal oxides. These advancements generated increasing interest in the use of nanoimprint lithography for the fabrication of photonic structures for light management in optoelectronic devices. After describing standard nanoimprint lithography and its derivative soft-lithography methods, we briefly discuss nanoimprint capabilities and prospects in photonic applications. In particular we review recent implementations of imprinted photonic structures for light management in organic light emitting diodes, solar cells, solid state lasers and sensors.

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Microcontact Printing of Ultrahigh Density Gold Nanoparticle Monolayer for Flexible Flash Memories

Cited by 146 publications

References 33 publications

An upconverted photonic nonvolatile memory

An upconverted photonic nonvolatile memory

Non-volatile organic memory with sub-millimetre bending radius

Nanoimprint Lithography: Toward Functional Photonic Crystals

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