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The use of a thin mixed layer consisting of an inert diluent material and a light emitting material between the hole-transport layer and electron-transport layer of organic light-emitting diodes leads to an increase in the external quantum…

软凝聚态物质 · 物理学 2011-07-15 S. H. Mohan , K. Garre , N. Bhandari , M. Cahay

The application of solution-processable graphene oxide (GO) as hole injection layer in organic light-emitting diodes (OLEDs) is demonstrated. High luminance of over 53,000 cd m-2 is obtained at only 10 V. The results will unlock a route of…

材料科学 · 物理学 2014-01-20 Shengwei Shi , Veera Sadhu , Reda Moubah , Guy Schmerber , Qinye Bao , S. Ravi P. Silva

Organic electrochemical transistors (OECTs) have the potential to revolutionize the field of organic bioelectronics. To date, most of the reported OECTs include p-type (semi-)conducting polymers as the channel material, while n-type OECTs…

Organic light-emitting diodes (OLEDs) are central to modern display technologies and are promising candidates for low-cost energy-efficient lighting. Their performance is determined by numerous, intricate fabrication parameters, but not…

Oxygen defects in semiconducting single-walled carbon nanotubes (SWCNTs) are localized disruptions in the carbon lattice caused by the formation of epoxy or ether groups, commonly through wet-chemical reactions. The associated modifications…

应用物理 · 物理学 2024-02-09 Sonja Wieland , Abdurrahman Ali El Yumin , Simon Settele , Jana Zaumseil

The covalent functionalization of single-walled carbon nanotubes (SWNTs) with luminescent oxygen defects increases their brightness and enables their application as optical biosensors or fluorescent probes for in-vivo imaging in the…

Semiconducting single-wall carbon nanotubes (s-SWNTs) have proved to be promising material for nanophotonics and optoelectronics. Due to the possibility of tuning their direct band gap and controlling excitonic recombinations in the…

The field emission properties of ion irradiated multiwalled carbon nanotubes (MWCNTs) and doublewalled carbon nanotubes (DWCNTs) have been studied. The carbon nanotubes synthesized by a chemical vapor deposition method were irradiated by…

材料科学 · 物理学 2014-04-28 P. M. Koinkar , A. Kumar , D. K. Avasthi , M. A. More , Ri-ichi Murakami

Nanowire-based light-emitting devices require multi-quantum well heterostructures with high room temperature optical efficiencies. We demonstrate that such efficiencies can be attained through the use of ZnO/Zn(1-x)MgxO core shell quantum…

Electrically-driven light emission from carbon nanotubes could be exploited in nano-scale lasers and single-photon sources, and has therefore been the focus of much research. However, to date, high electric fields and currents have been…

介观与纳米尺度物理 · 物理学 2010-05-03 Thomas Mueller , Megumi Kinoshita , Mathias Steiner , Vasili Perebeinos , Ageeth A. Bol , Damon B. Farmer , Phaedon Avouris

Carbon nanotubes (CNTs) have attracted increasing attention because of their unique structural, mechanical, and electronic properties. Surface chemistry modifications are also useful and critical to manipulate the adsorptive properties of…

材料科学 · 物理学 2007-08-15 K. -S. Lin , Ruey-Bing Li , Frank Lee , Li-Cheng Lou , Su-Wei Chiu

Molecular level components, like carbon multiwalled nanotubes (MWNT), show great potential for future nanoelectronics. At low frequencies, only the outermost carbon layer determines the transport properties of the MWNT. Due to the…

介观与纳米尺度物理 · 物理学 2007-05-23 Markus Ahlskog , Pertti Hakonen , Mikko Paalanen , Leif Roschier , Reeta Tarkiainen

We present a novel, cost-effective and facile technique, wherein multi-walled carbon nano-tubes (CNTs) were used to transform a photoluminescent material to exhibit stable and efficient electroluminescence (EL) at low-voltages. As a case…

材料科学 · 物理学 2012-11-19 D. Haranath , Sonal Sahai , Mushahid Husain , Savvi Mishra , Virendra Shanker

We report on coupling between semiconducting single-wall carbon nanotubes (s-SWNT) photoluminescence and silicon microring resonators. Polyfluorene extracted s-SWNT deposited on such resonators exhibit sharp emission peaks, due to…

光学 · 物理学 2015-08-06 Adrien Noury , Xavier Le Roux , Laurent Vivien , Nicolas Izard

Photoluminescence properties of semiconducting single wall carbon nanotubes (s-SWNT) thin films with different metallic single wall carbon nanotubes (m-SWNT) concentrations are reported. s-SWNT purified samples are obtained by polymer…

Bright blue organic light-emitting diodes (OLEDs) based on 1,4,5,8,N-pentamethylcarbazole (PMC) and on dimer of N-ethylcarbazole (N,N'-diethyl-3,3'-bicarbazyl) (DEC) as emitting layers or as dopants in a…

Photonic signal processing requires efficient on-chip light sources with higher modulation bandwidths. Todays conventional fastest semiconductor diode lasers exhibit modulation speeds only on the order of a few tens of GHz due to gain…

Single-wall carbon nanotube are considered a fascinating nanomaterial for photonic applications and are especially promising for efficient light emitter in the telecommunication wavelength range. Furthermore, their hybrid integration with…

光学 · 物理学 2015-08-06 Adrien Noury , Xavier Le Roux , Laurent Vivien , Nicolas Izard

High-performance solution-processed short-channel carbon nanotube (CNT) thin film transistors (TFTs) are fabricated using densely aligned arrays of metallic CNTs (m-CNTs) as source and drain electrodes, and aligned arrays of semiconducting…

介观与纳米尺度物理 · 物理学 2015-06-18 Biddut K. Sarker , Narae Kang , Saiful I. Khondaker

The viscosity of oxygen-functionalized multi-walled carbon nanotube (O-MWCNT) nanofluids was measured for concentrations from 0.1 to 10 ppm under conditions of 0 to 30 MPag pressures and 0 to 10 C temperatures. The presence of O-MWCNTs did…

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