Growth and characterization of high-efficiency InGaN MQW blue and green LEDs from large-scale-production MOCVD reactors

1999 ◽  
Author(s):  
Chuong A. Tran ◽  
Robert F. Karlicek, Jr. ◽  
Michael G. Brown ◽  
Ivan Eliashevich ◽  
Alexander Gurary ◽  
...  
Keyword(s):  
Large Scale ◽  
High Efficiency ◽  
Scale Production ◽  
Large Scale Production ◽  
Green Leds

scholarly journals Efficient and large-area all vacuum-deposited perovskite light-emitting diodes via spatial confinement

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peipei Du ◽  
Jinghui Li ◽  
Liang Wang ◽  
Liang Sun ◽  
Xi Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Scale ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Scale Production ◽  
Nonradiative Recombination ◽  
Large Area ◽  
Spatial Confinement ◽  
Light Emitting ◽  
Large Scale Production

AbstractWith rapid advances of perovskite light-emitting diodes (PeLEDs), the large-scale fabrication of patterned PeLEDs towards display panels is of increasing importance. However, most state-of-the-art PeLEDs are fabricated by solution-processed techniques, which are difficult to simultaneously achieve high-resolution pixels and large-scale production. To this end, we construct efficient CsPbBr3 PeLEDs employing a vacuum deposition technique, which has been demonstrated as the most successful route for commercial organic LED displays. By carefully controlling the strength of the spatial confinement in CsPbBr3 film, its radiative recombination is greatly enhanced while the nonradiative recombination is suppressed. As a result, the external quantum efficiency (EQE) of thermally evaporated PeLED reaches 8.0%, a record for vacuum processed PeLEDs. Benefitting from the excellent uniformity and scalability of the thermal evaporation, we demonstrate PeLED with a functional area up to 40.2 cm2 and a peak EQE of 7.1%, representing one of the most efficient large-area PeLEDs. We further achieve high-resolution patterned perovskite film with 100 μm pixels using fine metal masks, laying the foundation for potential display applications. We believe the strategy of confinement strength regulation in thermally evaporated perovskites provides an effective way to process high-efficiency and large-area PeLEDs towards commercial display panels.

scholarly journals Large-scale production and physicochemical characterization of human immune interferon.

1979 ◽  
Vol 26 (1) ◽  
pp. 36-41 ◽  
Author(s):  
M P Langford ◽  
J A Georgiades ◽  
G J Stanton ◽  
F Dianzani ◽  
H M Johnson
Keyword(s):  
Large Scale ◽  
Physicochemical Characterization ◽  
Scale Production ◽  
Immune Interferon ◽  
Large Scale Production ◽  
Human Immune

scholarly journals Preclinical Characterization of Naturally Occurring Polyketide Cyclophilin Inhibitors from the Sanglifehrin Family

2011 ◽  
Vol 55 (5) ◽  
pp. 1975-1981 ◽  
Author(s):  
Matthew A. Gregory ◽  
Michael Bobardt ◽  
Susan Obeid ◽  
Udayan Chatterji ◽  
Nigel J. Coates ◽  
...  
Keyword(s):  
Large Scale ◽  
Scale Production ◽  
Subgenomic Replicon ◽  
Isomerase Activity ◽  
Lead Compounds ◽  
Naturally Occurring ◽  
Large Scale Production ◽  
Pharmacokinetic Properties ◽  
Biosynthetic Engineering

ABSTRACTCyclophilin inhibitors currently in clinical trials for hepatitis C virus (HCV) are all analogues of cyclosporine (CsA). Sanglifehrins are a group of naturally occurring cyclophilin binding polyketides that are structurally distinct from the cyclosporines and are produced by a microorganism amenable to biosynthetic engineering for lead optimization and large-scale production by fermentation. Preclinical characterization of the potential utility of this class of compounds for the treatment of HCV revealed that the natural sanglifehrins A to D are all more potent than CsA at disrupting formation of the NS5A-CypA, -CypB, and -CypD complexes and at inhibition of CypA, CypB, and CypD isomerase activity. In particular, sanglifehrin B (SfB) was 30- to 50-fold more potent at inhibiting the isomerase activity of all Cyps tested than CsA and was also shown to be a more potent inhibitor of the 1b subgenomic replicon (50% effective concentrations [EC50s] of 0.070 μM and 0.16 μM in Huh 5-2 and Huh 9-13 cells, respectively). Physicochemical and mouse pharmacokinetic analyses revealed low oral bioavailability (F< 4%) and low solubility (<25 μM), although the half-lives (t1/2) of SfA and SfB in mouse blood after intravenous (i.v.) dosing were long (t1/2> 5 h). These data demonstrate that naturally occurring sanglifehrins are suitable lead compounds for the development of novel analogues that are less immunosuppressive and that have improved metabolism and pharmacokinetic properties.

scholarly journals Characterization of graphene nanosheets obtained by a modified Hummer's method

2018 ◽  
Vol 23 (1) ◽  
Author(s):  
Renata Hack ◽  
Cláudia Hack Gumz Correia ◽  
Ricardo Antônio de Simone Zanon ◽  
Sérgio Henrique Pezzin
Keyword(s):  
Electron Microscopy ◽  
Large Scale ◽  
Graphene Nanosheets ◽  
Scale Production ◽  
Natural Graphite ◽  
Graphite Oxidation ◽  
Transmission Electron ◽  
Large Scale Production ◽  
High Degree

ABSTRACT Natural graphite is an inexpensive and abundant source to obtain graphene nanosheets. The most efficient method for large-scale production is the chemical method, which is based on the oxidation of natural graphite. This paper reports the synthesis and characterization of graphene obtained by the Hummers method with some modifications. The results indicate a high degree of graphite oxidation, proving that the process was efficient. Analyses of field emission scanning electron microscopy (FEG), transmission electron microscopy (TEM), Raman spectroscopy, thermogravimetric analysis (TGA) and X-ray diffraction showed that the graphene produced presented characteristics similar to the commercial graphene.

scholarly journals Cloning, expression and characterization of l-asparaginase from Withania somnifera L. for large scale production

3 Biotech ◽  
2011 ◽  
Vol 1 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Vishal P. Oza ◽  
Pritesh P. Parmar ◽  
Darshan H. Patel ◽  
R. B. Subramanian
Keyword(s):  
Large Scale ◽  
Withania Somnifera ◽  
Scale Production ◽  
Large Scale Production

Large-Scale Production and Characterization of Biocompatible Colloidal Nanoalumina

Langmuir ◽  
2014 ◽  
Vol 30 (50) ◽  
pp. 15091-15101 ◽  
Author(s):  
W. A. W. Razali ◽  
V. K. A. Sreenivasan ◽  
E. M. Goldys ◽  
A. V. Zvyagin
Keyword(s):  
Large Scale ◽  
Scale Production ◽  
Large Scale Production
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