12‐GHz Thin‐Film Transistors on Transferrable Silicon Nanomembranes for High‐Performance Flexible Electronics

Sun, Lei; Qin, Guoxuan; Seo, Jung‐Hun; Celler, G. K.; Zhou, Weidong; Ma, Zhenqiang

doi:10.1002/smll.201000522

Cited by 143 publications

(116 citation statements)

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“…63,64 High-speed flexible electronic devices, some with operating frequencies that exceed 1 GHz, including MOSFETs, PIN diodes, single-pole single-throw switches can be realized with these and other Si NMs. [66][67][68] By use of other SOI-like substrates, Ge NMs can be interesting for photodetection due to high-absorption over a wide range of wavelengths. 69 Flexible arrays of PIN photodetectors fabricated with Ge NMs from germanium on insulator wafer (GeOI) offer excellent performance even after the severe bending.…”

Section: Bottom-up Approachesmentioning

confidence: 99%

Inorganic semiconducting materials for flexible and stretchable electronics

et al. 2017

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Recent progress in the synthesis and deterministic assembly of advanced classes of single crystalline inorganic semiconductor nanomaterial establishes a foundation for high-performance electronics on bendable, and even elastomeric, substrates. The results allow for classes of systems with capabilities that cannot be reproduced using conventional wafer-based technologies. Specifically, electronic devices that rely on the unusual shapes/forms/constructs of such semiconductors can offer mechanical properties, such as flexibility and stretchability, traditionally believed to be accessible only via comparatively low-performance organic materials, with superior operational features due to their excellent charge transport characteristics. Specifically, these approaches allow integration of high-performance electronic functionality onto various curvilinear shapes, with linear elastic mechanical responses to large strain deformations, of particular relevance in bio-integrated devices and bio-inspired designs. This review summarizes some recent progress in flexible electronics based on inorganic semiconductor nanomaterials, the key associated design strategies and examples of device components and modules with utility in biomedicine.

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Section: Bottom-up Approachesmentioning

confidence: 99%

Inorganic semiconducting materials for flexible and stretchable electronics

et al. 2017

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“…The alignment procedure was repeated until the entire chip was exposed. This local alignment allowed us to fabricate TFTs on PET with gate lengths as small as 1 μm [13]. Remarkable device speed, 12 GHz, has been achieved as shown in Figure 2(e).…”

Section: Methodsmentioning

confidence: 93%

Transferrable single-crystal silicon nanomembranes and their application to flexible microwave systems

Seo

Yuan

Sun

et al. 2011

Journal of Information Display

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This paper summarizes the recent fabrication and characterizations of flexible high-speed radio frequency (RF) transistors, PIN-diode single-pole single-throw switches, as well as flexible inductors and capacitors, based on single-crystalline Si nanomembranes transferred on polyethylene terephthalate substrates. Flexible thin-film transistors (TFTs) on plastic substrates have reached RF operation speed with a record cut-off/maximum oscillation frequency (f T /f max ) values of 3.8/12 GHz. PIN diode switches exhibit excellent ON/OFF behaviors at high RF frequencies. Flexible inductors and capacitors compatible with high-speed TFT fabrication show resonance frequencies (f res ) up to 9.1 and 13.5 GHz, respectively. Robust mechanical characteristics were also demonstrated with these high-frequency passives components.Keywords: flexible electronics; nanomembrane; radio frequency thin-film transistors; RF switches; inductors and capacitors IntroductionTraditionally, flexible electronics are mostly based on organic or low temperature deposition compatible amorphous semiconductor (Si) materials. Devices made from these materials can only be operated at very low speed (<<1 GHz) because of the inferior carrier properties of these materials. Regardless of the low speed, these flexible electronics are suitable for applications in products such as flexible displays [1], electronic tags [2], etc. In these applications, the mechanical flexibility of electronics is of critical importance. On the other hand, a number of other applications do require the use of extremely highspeed devices (>1 GHz, the radio frequency (RF) speed), such as Wi-Fi devices, wearable radios, RF identification devices, foldable phased-array antennas, large-area radars for remote sensing, surveillance [3], etc. Nonetheless, current high-speed devices have been predominantly made of rigid chips and none of the traditional flexible active semiconductors can satisfy the requirements of high-speed applications.A promising solution toward high-speed flexible electronics has emerged with the recent development of transferrable single-crystal Si nanomembranes (SiNMs) [4][5][6][7]. By releasing high-quality flexible materials from silicon-on-insulator (SOI) and other types of substrates and transferring them to a new host substrate, high carrier mobility comparable with that of the bulk counterpart has been demonstrated [5].

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“…Both organic and inorganic materials are utilized in flexible electronics. It is common practice to incorporate a hybrid of organic and inorganic materials to meet the requirements of specific applications [7][8][9].…”

Section: Populärvetenskaplig Sammanfattningmentioning

confidence: 99%

“…Several flexible diode and transistor structures with GHz operation range have been demonstrated based on silicon. The suggested fabrication processes for these devices include modifying silicon wafers into ribbons or thinning them until they are flexible, using peel-and-stick, lift-off or transfer printing techniques, depositing silicon nanomembranes, or solution processing of silanes followed by annealing [8,9,23,[34][35][36][37][38][39][40]. Besides silicon, other materials such as ZnO, Ge and indium-gallium-zinc-oxide have also been used for high frequency (HF) or UHF devices [41][42][43].…”

Section: Motivation and Goalmentioning

confidence: 99%

Addressability and GHz Operation in Flexible Electronics

Sani

2016

Linköping Studies in Science and Technology. Dissertations

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The first principle is that you must not fool yourself and you are the easiest person to fool. -Richard FeynmanThe discovery of conductive polymers in 1977 opened up a whole new path for flexible electronics. Conducting polymers and organic semiconductors are carbon rich compounds that are able to conduct charges while flexed and are compatible with low-cost and large-scale processes including printing and coating techniques. The conducting polymer has aided the rapidly expanding field of flexible electronics, leading to many new applications such as electronic skin, RFID tags, smart labels, flexible displays, implantable medical devices, and flexible sensors.However, there are several remaining challenges in the production and implementation of flexible electronic materials and devices. The conductivity of organic conductors and semiconductors is still orders of magnitude lower compared to their inorganic counterparts. In addition, non-flexible inorganic semiconductors still remain the materials of choice for high frequency applications; since the charge carrier mobility and thus operational speed of the organic materials are limited. Therefore, there remains a high demand to combine the high frequency operation of inorganic semiconductors with the flexible fabrication methods of organic systems for future electronics.In addition to the challenges in the choice of materials in flexible electronics, the upscaling of the flexible devices and implementing them in circuits can also be complicated. Lack of non-linearity is an issue that arises when flexible devices with linear behavior need to be incorporated in an array or matrix form. Non-linearity is important for applications such as displays and memory arrays, where the devices are arranged as matrix cells addressed by their row and column number. If the behavior of cells in the matrix is linear, addressing each cell affects the adjacent cells. Therefore, inducing non-linearity and, consequently, addressability in such linear devices is the first step before scaling up into matrix schemes.In this work, non-linear organic/inorganic hybrid devices are produced to overcome the limitations mentioned above and leverage the advantages of both organic and inorganic materials. Two novel methods are developed to incorporate non-flexible inorganic semiconductors into ultra-high frequency (UHF) flexible devices. In the first method, Si is ground into a powder with micrometer-sized particles and printed through standard screen printing. For the first time, allprinted flexible diodes operating in the GHz range are produced. The energy harvesting application of the printed diodes is demonstrated in a flexible circuit coupling an antenna and the display to the diode.A second and simpler room-temperature method based on lamination was later developed, which further improves device performance and operational frequency. Here, a flexible semiconducting composite film consisting of Si microparticles, glycerol, and nano-fibrillated cellulose is produced and used as the semiconduct...

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12‐GHz Thin‐Film Transistors on Transferrable Silicon Nanomembranes for High‐Performance Flexible Electronics

Cited by 143 publications

References 12 publications

Inorganic semiconducting materials for flexible and stretchable electronics

Inorganic semiconducting materials for flexible and stretchable electronics

Transferrable single-crystal silicon nanomembranes and their application to flexible microwave systems

Addressability and GHz Operation in Flexible Electronics

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