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515 Newest Publications about the topic leds

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Luminescence and advanced mass spectroscopic characterization of sodium zinc orthophosphate phosphor for low‐cost light‐emitting diodes

22-Jul-2015 | Savvi Mishra, G. Swati, B. Rajesh, Kriti Tyagi, Bhasker Gahtori, B. Sivaiah, N. Vijayan, M. K. Dalai, A. Dhar, S. Au ..., Luminescence, 2015

Abstract A new rare‐earth‐free NaZnPO4:Mn2+ (NZP:Mn) phosphor powder has been developed by our group and investigated meticulously for the first time using secondary ion mass spectroscopy and chemical imaging techniques. The studies confirmed the effective incorporation of Mn2+ into the host ...

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Assembly of light‐emitting diode based on hydrophilic CdTe quantum dots incorporating dehydrated silica gel

22-Jul-2015 | Jinhua Du, Chunlei Wang, Xiaojing Xu, Zhuyuan Wang, Shuhong Xu, Yiping Cui, Luminescence, 2015

Abstract Stable photoluminescence QD light‐emitting diodes (QD‐LEDs) were made based on hydrophilic CdTe quantum dots (QDs). A quantum dot‐inorganic nanocomposite (hydrophilic CdTe QDs incorporating dehydrated silica gel) was prepared by two methods (rotary evaporation and freeze drying). ...

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Understanding the Intrinsic Water Wettability of Molybdenum Disulfide (MoS2)

22-Jul-2015 | Andrew Kozbial; Xiao Gong; Haitao Liu; Lei Li, Langmuir, 2015

2D semiconductors allow for unique and ultrasensitive devices to be fabricated for applications ranging from clinical diagnosis instruments to low-energy light-emitting diodes (LEDs). Graphene has championed research in this field since it was first fabricated; however, its zero bandgap creates ...

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Growth and Anion Exchange Conversion of CH3NH3PbX3 Nanorod Arrays for Light-Emitting Diodes

20-Jul-2015 | Andrew Barnabas Wong; Minliang Lai; Samuel Wilson Eaton; Yi Yu; Elbert Lin; Letian Dou; Anthony Fu; Peidong Yang, Nano Letters, 2015

The nanowire and nanorod morphology offers great advantages for application in a range of optoelectronic devices, but these high-quality nanorod arrays are typically based on high temperature growth techniques. Here, we demonstrate the successful room temperature growth of a hybrid perovskite ...

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Visible‐Light‐Induced Click Chemistry

17-Jul-2015 | Jan O. Mueller, Friedrich G. Schmidt, James P. Blinco, Christopher Barner‐Kowollik, Angewandte Chemie International Edition, 2015

An ultra‐rapid visible‐light‐driven method for catalyst‐free ligation is reported. In their Communication (DOI: 10.1002/anie.201504716), C. Barner‐Kowollik and co‐workers describe a highly efficient conjugation between an azirine moiety (white) and diverse dipolarophiles (red) under irradiation ...

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Growth of nitride‐based light emitting diodes with a high‐reflectivity distributed Bragg reflector on mesa‐patterned silicon substrate

14-Jul-2015 | Benjamin Damilano, Stéphane Brochen, Julien Brault, Tasnia Hossain, François Réveret, Eric Frayssinet, Sébastien Che ..., physica status solidi (a), 2015

(Ga,In)N/GaN multiple quantum well blue light emitting diodes (LEDs) grown on mesa‐patterned silicon substrates with improved electro‐optic characteristics are demonstrated. The active regions are grown on top of high‐reflectivity AlN/(Al,Ga)N distributed Bragg reflectors (DBRs). Due to ...

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Sensors, Vol. 15, Pages 16484-16502: HyperCube: A Small Lensless Position Sensing Device for the Tracking of Flickering Infrared LEDs

08-Jul-2015 | Raharijaona, Thibaut ; Mignon, Paul ; Juston, Raphaël ; Kerhuel, Lubin ; Viollet, Stéphane, Sensors, 2015

An innovative insect-based visual sensor is designed to perform active marker tracking. Without any optics and a field-of-view of about 60°, a novel miniature visual sensor is able to locate flickering markers (LEDs) with an accuracy much greater than the one dictated by the pixel pitch. With a ...

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Semipolar (112―2) InGaN light‐emitting diodes grown on chemically–mechanically polished GaN templates

23-Jun-2015 | Duc V. Dinh, Mahbub Akhter, Silvino Presa, Grzegorz Kozlowski, Donagh O'Mahony, Pleun P. Maaskant, Frank Brunner, Ma ..., physica status solidi (a), 2015

Abstract Abstractauthoren InGaN multiple quantum well light‐emitting diodes (LEDs) were grown on chemically–mechanically polished (112) GaN templates (up to 100 mm diameter wafers) by metalorganic vapour phase epitaxy. Initial GaN overgrowth on the polished templates in nitrogen ambient ...

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An orange emitting phosphor Lu2−xCaMg2Si2.9Ti0.1O12:xCe with pure garnet phase for warm white LEDs

21-Jun-2015 | Author(s): Yaoqing Chu , Qinghong Zhang , Jiayue Xu , Yaogang Li , Hongzhi Wang, Journal of Solid State Chemistry, 2015

Publication date: September 2015 Source:Journal of Solid State Chemistry, Volume 229 Author(s): Yaoqing Chu , Qinghong Zhang , Jiayue Xu , Yaogang Li , Hongzhi Wang A new silicate garnet phosphor, Lu2−x CaMg2Si2.9Ti0.1O12:xCe was synthesized by a high temperature solid-state reaction ...

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ZnO Nanorod Arrays as Electron Injection Layers for Efficient Organic Light Emitting Diodes

18-Jun-2015 | Jorge C. D. Faria, Alasdair J. Campbell, Martyn A. McLachlan, Advanced Functional Materials, 2015

Nanostructured oxide arrays have received significant attention as charge injection and collection electrodes in numerous optoelectronic devices. Zinc oxide (ZnO) nanorods have received particular interest owing to the ease of fabrication using scalable, solution processes with a high degree of ...

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