Ultralow-voltage all-carbon low-dimensional-material flexible transistors integrated by room-temperature photolithography incorporated filtration

Nanoscale ◽  
2019 ◽  
Vol 11 (32) ◽  
pp. 15029-15036 ◽  
Author(s):  
Chunhui Du ◽  
Min Zhang ◽  
Qiuyue Huang ◽  
Shengdong Zhang ◽  
Yang Chai
Keyword(s):  
Room Temperature ◽  
World Wide ◽  
Wearable Electronics ◽  
Flexible Devices ◽  
Low Dimensional ◽  
Low Dimensional Materials

Low dimensional materials (LDMs) have drawn world-wide attention as potential candidates applied in flexible and wearable electronics. However, integrating all-LDMs to realize independent-operation flexible devices are pretty challenging.

Growth and Characterization of 1D Bi2Te3 Nanowires

2005 ◽  
Vol 886 ◽  
Author(s):  
M. Craps ◽  
Nick Gothard ◽  
Rahul Rao ◽  
Jian He ◽  
JoAn Hudson ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Room Temperature ◽  
Iron Catalyst ◽  
Inert Atmosphere ◽  
Laser Vaporization ◽  
Theoretical Studies ◽  
Low Dimensional ◽  
Quartz Substrates ◽  
Low Dimensional Materials

ABSTRACTBulk bismuth telluride (Bi2Te3) is one of the best known thermoelectric materials with a figure of merit ZT ∼1 at room temperature. Theoretical studies have suggested that low-dimensional materials may exhibit ZT values that exceed 1. In this study, we used the pulsed laser vaporization (PLV) method to prepare Bi2Te3 nanowires on silicon and quartz substrates by ablating Bi2Te3 targets in an inert atmosphere. Nano-sized gold or iron catalyst particles were used to seed the growth of the Bi2Te3 nanowires. Results from electron microscopy and Raman spectroscopy are discussed.

Recent progress of intrinsic and stimulated room-temperature gas sensors enabled by low-dimensional materials

2021 ◽  
Author(s):  
Yinfen Cheng ◽  
Baiyu Ren ◽  
Kai Xu ◽  
Itthipon Jeerapan ◽  
Hui Chen ◽  
...  
Keyword(s):  
Control Systems ◽  
Gas Sensors ◽  
Room Temperature ◽  
Recent Progress ◽  
The Internet ◽  
Iot Platforms ◽  
Automation Control ◽  
Low Dimensional ◽  
Low Dimensional Materials ◽  
The Internet Of Things

Room-temperature (RT) gas sensors based on low-dimensional materials have rapidly received wide attention in various automation control systems and particularly in the Internet of Things (IoT) platforms due to their...

scholarly journals Recent Development of Multifunctional Sensors Based on Low-Dimensional Materials

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7727
Author(s):  
Qian Xu ◽  
Yang Dai ◽  
Yiyao Peng ◽  
Li Hong ◽  
Ning Yang ◽  
...  
Keyword(s):  
Material Selection ◽  
Mechanical Stimulus ◽  
Essential Elements ◽  
Wearable Electronics ◽  
Research Areas ◽  
Transmission Mechanisms ◽  
Integrated Devices ◽  
Multiple Sensing ◽  
Low Dimensional ◽  
Low Dimensional Materials

With the demand for accurately recognizing human actions and environmental situations, multifunctional sensors are essential elements for smart applications in various emerging technologies, such as smart robots, human-machine interface, and wearable electronics. Low-dimensional materials provide fertile soil for multifunction-integrated devices. This review focuses on the multifunctional sensors for mechanical stimulus and environmental information, such as strain, pressure, light, temperature, and gas, which are fabricated from low-dimensional materials. The material characteristics, device architecture, transmission mechanisms, and sensing functions are comprehensively and systematically introduced. Besides multiple sensing functions, the integrated potential ability of supplying energy and expressing and storing information are also demonstrated. Some new process technologies and emerging research areas are highlighted. It is presented that optimization of device structures, appropriate material selection for synergy effect, and application of piezotronics and piezo-phototronics are effective approaches for constructing and improving the performance of multifunctional sensors. Finally, the current challenges and direction of future development are proposed.

scholarly journals Inkjet-printed low-dimensional materials-based complementary electronic circuits on paper

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Irene Brunetti ◽  
Lorenzo Pimpolari ◽  
Silvia Conti ◽  
Robyn Worsley ◽  
Subimal Majee ◽  
...  
Keyword(s):  
Hexagonal Boron Nitride ◽  
Flexible Substrate ◽  
Complementary Metal Oxide Semiconductor ◽  
Logic Gates ◽  
Building Blocks ◽  
Cmos Technology ◽  
Oxide Semiconductor ◽  
Wearable Electronics ◽  
Low Dimensional ◽  
Low Dimensional Materials

AbstractComplementary electronics has represented the corner stone of the digital era, and silicon technology has enabled this accomplishment. At the dawn of the flexible and wearable electronics age, the seek for new materials enabling the integration of complementary metal-oxide semiconductor (CMOS) technology on flexible substrates, finds in low-dimensional materials (either 1D or 2D) extraordinary candidates. Here, we show that the main building blocks for digital electronics can be obtained by exploiting 2D materials like molybdenum disulfide, hexagonal boron nitride and 1D materials such as carbon nanotubes through the inkjet-printing technique. In particular, we show that the proposed approach enables the fabrication of logic gates and a basic sequential network on a flexible substrate such as paper, with a performance already comparable with mainstream organic technology.

Symmetry and twins in the monophosphate tungsten bronze series (PO2)4(WO3)2m (2 ≤ m ≤ 14)

2000 ◽  
Vol 56 (3) ◽  
pp. 377-391 ◽  
Author(s):  
Pascal Roussel ◽  
Philippe Labbé ◽  
Daniel Groult
Keyword(s):  
Charge Density Wave ◽  
Room Temperature ◽  
Density Wave ◽  
Tungsten Bronze ◽  
Metallic State ◽  
Temperature Form ◽  
Low Dimensional ◽  
Low Dimensional Materials ◽  
High Temperature Form ◽  
M 14

Monophosphate tungsten bronze with pentagonal tunnels (PO2)4(WO3)2 m are low-dimensional materials with charge density wave (CDW)-type electron instabilities. Two forms of the structure can thus be expected for all the members of the series: a low-temperature form (LT) corresponding to the CDW state and a high-temperature form (HT) corresponding to a normal metallic state. The HT form is described here for m = 9 and compared with that of the m = 5 and m = 7 counterparts. It is shown that a systematic twin phenomenon must be taken into account for HT members because of two possible configurations of the tilting mode of WO6 octahedra. The structure is also compared with that of m = 10, which exhibits the modulated CDW–LT form at room temperature. Owing to two possible polarization directions of the segments built of m WO6 octahedra, a twin phenomenon is also encountered in the LT forms. A review of all the structures known at present (m = 2, 4, 5, 6, 7, 8, 9, 10, 12) leads us to propose a structural law based on the building mode of WO6 octahedra in WO3-type slabs to explain the symmetry changes observed between even and odd members of the series.

scholarly journals Exciton control in a room temperature bulk semiconductor with coherent strain pulses

2019 ◽  
Vol 5 (11) ◽  
pp. eaax2937 ◽  
Author(s):  
Edoardo Baldini ◽  
Adriel Dominguez ◽  
Tania Palmieri ◽  
Oliviero Cannelli ◽  
Angel Rubio ◽  
...  
Keyword(s):  
Room Temperature ◽  
Stark Effect ◽  
Crystalline Form ◽  
Deformation Potential ◽  
Phonon Interaction ◽  
Optical Stark Effect ◽  
Low Dimensional ◽  
Low Dimensional Materials ◽  
Coherent Acoustic Phonons ◽  
Bulk Semiconductor

Controlling the excitonic optical properties of room temperature semiconductors using time-dependent perturbations is key to future optoelectronic applications. The optical Stark effect in bulk and low-dimensional materials has recently shown exciton shifts below 20 meV. Here, we demonstrate dynamical tuning of the exciton properties by photoinduced coherent acoustic phonons in the cheap and abundant wide-gap semiconductor anatase titanium dioxide (TiO2) in single crystalline form. The giant coupling between the excitons and the photoinduced strain pulses yields a room temperature exciton shift of 30 to 50 meV and a marked modulation of its oscillator strength. An advanced ab initio treatment of the exciton-phonon interaction fully accounts for these results, and shows that the deformation potential coupling underlies the generation and detection of the giant acoustic phonon modulations.

scholarly journals The Highly Uniform Photoresponsivity from Visible to Near IR Light in Sb2Te3 Flakes

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1535
Author(s):  
Shiu-Ming Huang ◽  
Jai-Lung Hung ◽  
Mitch Chou ◽  
Chi-Yang Chen ◽  
Fang-Chen Liu ◽  
...  
Keyword(s):  
Band Structure ◽  
Energy Difference ◽  
Experimental Result ◽  
Light Illumination ◽  
Near Ir ◽  
State Band ◽  
Valence Bands ◽  
Low Dimensional ◽  
Low Dimensional Materials ◽  
Ir Light

Broadband photosensors have been widely studied in various kinds of materials. Experimental results have revealed strong wavelength-dependent photoresponses in all previous reports. This limits the potential application of broadband photosensors. Therefore, finding a wavelength-insensitive photosensor is imperative in this application. Photocurrent measurements were performed in Sb2Te3 flakes at various wavelengths ranging from visible to near IR light. The measured photocurrent change was insensitive to wavelengths from 300 to 1000 nm. The observed wavelength response deviation was lower than that in all previous reports. Our results show that the corresponding energies of these photocurrent peaks are consistent with the energy difference of the density of state peaks between conduction and valence bands. This suggests that the observed photocurrent originates from these band structure peak transitions under light illumination. Contrary to the most common explanation that observed broadband photocurrent carrier is mainly from the surface state in low-dimensional materials, our experimental result suggests that bulk state band structure is the main source of the observed photocurrent and dominates the broadband photocurrent.

scholarly journals Transforming Pt-SnO2 Nanoparticles into Pt-SnO2 Composite Nanoceramics for Room-Temperature Hydrogen-Sensing Applications

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2123
Author(s):  
Ming Liu ◽  
Caochuang Wang ◽  
Pengcheng Li ◽  
Liang Cheng ◽  
Yongming Hu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Sintering Temperature ◽  
Sno2 Nanoparticles ◽  
Hydrogen Sensing ◽  
Sensing Applications ◽  
Nanostructured Metal Oxides ◽  
Low Dimensional ◽  
Sensing Characteristics ◽  
Nanostructured Metal

Many low-dimensional nanostructured metal oxides (MOXs) with impressive room-temperature gas-sensing characteristics have been synthesized, yet transforming them into relatively robust bulk materials has been quite neglected. Pt-decorated SnO2 nanoparticles with 0.25–2.5 wt% Pt were prepared, and highly attractive room-temperature hydrogen-sensing characteristics were observed for them all through pressing them into pellets. Some pressed pellets were further sintered over a wide temperature range of 600–1200 °C. Though the room-temperature hydrogen-sensing characteristics were greatly degraded in many samples after sintering, those samples with 0.25 wt% Pt and sintered at 800 °C exhibited impressive room-temperature hydrogen-sensing characteristics comparable to those of their counterparts of as-pressed pellets. The variation of room-temperature hydrogen-sensing characteristics among the samples was explained by the facts that the connectivity between SnO2 grains increases with increasing sintering temperature, and Pt promotes oxidation of SnO2 at high temperatures. These results clearly demonstrate that some low-dimensional MOX nanocrystals can be successfully transformed into bulk MOXs with improved robustness and comparable room-temperature gas-sensing characteristics.

scholarly journals Definition of a scoring parameter to identify low-dimensional materials components

2019 ◽  
Vol 3 (3) ◽  
Author(s):  
Peter Mahler Larsen ◽  
Mohnish Pandey ◽  
Mikkel Strange ◽  
Karsten Wedel Jacobsen
Keyword(s):  
Definition Of ◽  
Low Dimensional ◽  
Low Dimensional Materials

scholarly journals Foldable and washable textile-based OLEDs with a multi-functional near-room-temperature encapsulation layer for smart e-textiles

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
So Yeong Jeong ◽  
Hye Rin Shim ◽  
Yunha Na ◽  
Ki Suk Kang ◽  
Yongmin Jeon ◽  
...  
Keyword(s):  
Room Temperature ◽  
Wearable Electronics ◽  
Ambient Conditions ◽  
Light Emitting ◽  
Stable Operating ◽  
Mechanical Durability ◽  
Potential Applications ◽  
Wearable Electronic ◽  
Data Signal ◽  
Wearable Electronic Devices

AbstractWearable electronic devices are being developed because of their wide potential applications and user convenience. Among them, wearable organic light emitting diodes (OLEDs) play an important role in visualizing the data signal processed in wearable electronics to humans. In this study, textile-based OLEDs were fabricated and their practical utility was demonstrated. The textile-based OLEDs exhibited a stable operating lifetime under ambient conditions, enough mechanical durability to endure the deformation by the movement of humans, and washability for maintaining its optoelectronic properties even in water condition such as rain, sweat, or washing. In this study, the main technology used to realize this textile-based OLED was multi-functional near-room-temperature encapsulation. The outstanding impermeability of TiO2 film deposited at near-room-temperature was demonstrated. The internal residual stress in the encapsulation layer was controlled, and the device was capped by highly cross-linked hydrophobic polymer film, providing a highly impermeable, mechanically flexible, and waterproof encapsulation.

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