Conferences related to Solid State Lighting

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2021 IEEE Photovoltaic Specialists Conference (PVSC)

Photovoltaic materials, devices, systems and related science and technology


2020 IEEE International Solid- State Circuits Conference - (ISSCC)

ISSCC is the foremost global forum for solid-state circuits and systems-on-a-chip. The Conference offers 5 days of technical papers and educational events related to integrated circuits, including analog, digital, data converters, memory, RF, communications, imagers, medical and MEMS ICs.


2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF)

Ferroelectric materials and applications


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2020 IEEE International Electron Devices Meeting (IEDM)

the IEEE/IEDM has been the world's main forum for reporting breakthroughs in technology, design, manufacturing, physics and the modeling of semiconductors and other electronic devices. Topics range from deep submicron CMOS transistors and memories to novel displays and imagers, from compound semiconductor materials to nanotechnology devices and architectures, from micromachined devices to smart -power technologies, etc.



Periodicals related to Solid State Lighting

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.


Communications Magazine, IEEE

IEEE Communications Magazine was the number three most-cited journal in telecommunications and the number eighteen cited journal in electrical and electronics engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications ...


Communications Surveys & Tutorials, IEEE

Each tutorial reviews currents communications topics in network management and computer and wireless communications. Available tutorials, which are 2.5 to 5 hours in length contains the original visuals and voice-over by the presenter. IEEE Communications Surveys & Tutorials features two distinct types of articles: original articles and reprints. The original articles are exclusively written for IEEE Communications Surveys & Tutorials ...


Consumer Electronics, IEEE Transactions on

The design and manufacture of consumer electronics products, components, and related activities, particularly those used for entertainment, leisure, and educational purposes


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.



Most published Xplore authors for Solid State Lighting

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Xplore Articles related to Solid State Lighting

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Advances in GaN semiconductors for energy efficient solid state lighting

IEEE Photonics Conference 2012, 2012

Currently, GaN white LEDs exhibit luminous efficacy greater than 150 lm/Watt, and external quantum effiencies higher than 50% at low drive currents. However, current commercial LEDs grown on the c-plane of the wurtzite crystal suffer from the quantum confined Stark effect (QCSE) due to the large polarization-related electric fields. This effect causes band bending in the active region and results ...


Solid state lighting in commercial applications

2016 13th China International Forum on Solid State Lighting (SSLChina), 2016

Solid state lighting provides an excellent vehicle for enhancing the retail experience, educational efficacy, corporate branding and to help set just the right mood. Lighting plays a critical role in attracting customers, driving their buying experience and increasing the chances they will return again. Lighting sets the mood. Boeing recently implemented a mellow blue tone in the interior of their ...


Solid-State Lighting: Toward Superior Illumination

Proceedings of the IEEE, 2005

Solid-state lighting technology is now emerging as a cost-competitive,energy- efficient alternative to conventional electrical lighting. We review the history of lighting, discuss the benefits and challenges of the solid-state lighting technologies, and compare two approaches for generating white light from solid-state sources based on phosphor LEDs (which could be considered as solid-state replacement of fluorescent tubes) and multichip LED lamps,which ...


The Transition to Solid-State Lighting

Proceedings of the IEEE, 2009

Lighting constitutes more than 20% of total U.S. electricity consumption, a similar fraction in the European Union, and an even higher fraction in many developing countries. Because many current lighting technologies are highly inefficient, improved technologies for lighting hold great potential for energy savings and for reducing associated greenhouse gas emissions. Solid- state lighting shows great promise as a source ...


A Novel Design of Solid-State Lighting Control System

2010 Asia-Pacific Conference on Wearable Computing Systems, 2010

A novel control system design used for Solid-state lighting is presented, which is based on ARM embedded system and Zigbee wireless network. The hardware and software design is introduced in detail. The test results showed that the control system can not only achieve 255 luminance levels but also 255 kinds of colors.



Educational Resources on Solid State Lighting

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IEEE-USA E-Books

  • Advances in GaN semiconductors for energy efficient solid state lighting

    Currently, GaN white LEDs exhibit luminous efficacy greater than 150 lm/Watt, and external quantum effiencies higher than 50% at low drive currents. However, current commercial LEDs grown on the c-plane of the wurtzite crystal suffer from the quantum confined Stark effect (QCSE) due to the large polarization-related electric fields. This effect causes band bending in the active region and results in the spatial separation of the electron and hole wave functions, thus lowering the radiative recombination rate and reducing the internal quantum efficiency (IQE). Moreover, the IQE is further reduced with increasing injection current or temperature by a phenomenon known as “efficiency droop”. Crystal orientations that have reduced polarization related effects, such as the semipolar and nonpolar orientations, enable the growth of thick QWs, which results in reduced carrier density in the wells. A review of the unique polarization anisotropy in GaN will be discussed for the different crystal orientations. Emphasis on nonpolar and semipolar LEDs will highlight high-power violet, blue and green emitters and considers the effects of indium incorporation and substrate miscut. In this work, we demonstrated a small-area (0.1 mm2) semipolar (2021̅) blue (447 nm) light-emitting diode (LED) with high light output power (LOP) and external quantum efficiency (EQE) by utilizing a single 12-nm-thick InGaN quantum well. Figure 1 showed the scanning transmission electron microscope (STEM) image of the active area of the LED. In addition, as we can see in Fig. 2, the LED had pulsed LOPs of 140, 253, 361, and 460 mW, and EQEs of 50.1, 45.3, 43.0, and 41.2 %, at current densities of 100, 200, 300, and 400 A/cm2, respectively. Low efficiency droop performance in LEDs also can be seen in the inset of Fig. 2. By lowering the 3-dimentional current density, a highest characteristic temperature of ~ 900 K at a current density of 40 A/cm2(see Fig. 3) and >; 90% Hot/Cold factors in the current density region between 20 to 100 A/cm2 (see Fig. 4) were also demonstrated when increasing ambient temperature from 20 to 100 °C, owning to the reduction in carrier leakage out of the active region and Auger recombination.

  • Solid state lighting in commercial applications

    Solid state lighting provides an excellent vehicle for enhancing the retail experience, educational efficacy, corporate branding and to help set just the right mood. Lighting plays a critical role in attracting customers, driving their buying experience and increasing the chances they will return again. Lighting sets the mood. Boeing recently implemented a mellow blue tone in the interior of their airplanes with great success. Color sensing is required for color accuracy, which is made possible with PoE/LoE digital control, covering the RGB color spectrum of visible light. This paper explores a few examples to illustrate the value proposition in a retail stores, restaurants, transportation, in addition to the colors used in corporate branding. In a retail setting, lighting contributes to the identity of the business, the comfort of the customers, and the mood of employees. Intelligent lighting can also be used in tandem with security cameras and emergency lighting for increased safety and theft prevention. A store can transform the retail shopping experience for their customers with controlled solid state lighting. Color is deeply integrated with our perceptions, psychology, decision making, mood, alertness, state of relaxation and enjoyment of our daily experience. Solid state color mixing, coupled with color sensing, provide a flexible method to enhance retail spaces in a way that add profit and style in commercial applications.

  • Solid-State Lighting: Toward Superior Illumination

    Solid-state lighting technology is now emerging as a cost-competitive,energy- efficient alternative to conventional electrical lighting. We review the history of lighting, discuss the benefits and challenges of the solid-state lighting technologies, and compare two approaches for generating white light from solid-state sources based on phosphor LEDs (which could be considered as solid-state replacement of fluorescent tubes) and multichip LED lamps,which offer many advantages, such as chromaticity control, better light quality,and higher efficiency.

  • The Transition to Solid-State Lighting

    Lighting constitutes more than 20% of total U.S. electricity consumption, a similar fraction in the European Union, and an even higher fraction in many developing countries. Because many current lighting technologies are highly inefficient, improved technologies for lighting hold great potential for energy savings and for reducing associated greenhouse gas emissions. Solid- state lighting shows great promise as a source of efficient, affordable, color-balanced white light. Indeed, assuming market discount rates, engineering-economic analysis demonstrates that white solid-state lighting already has a lower levelized annual cost (LAC) than incandescent bulbs. The LAC for white solid-state lighting will be lower than that of the most efficient fluorescent bulbs by the end of this decade. However, a large literature indicates that households do not make their decisions in terms of simple expected economic value. After a review of the technology, we compare the electricity consumption, carbon emissions, and cost-effectiveness of current lighting technologies, accounting for expected performance evolution through 2015. We then simulate the lighting electricity consumption and implicit greenhouse gases emissions for the U.S. residential and commercial sectors through 2015 under different policy scenarios: voluntary solid-state lighting adoption, implementation of lighting standards in new construction, and rebate programs or equivalent subsidies. Finally, we provide a measure of cost-effectiveness for solid-state lighting in the context of other climate change abatement policies.

  • A Novel Design of Solid-State Lighting Control System

    A novel control system design used for Solid-state lighting is presented, which is based on ARM embedded system and Zigbee wireless network. The hardware and software design is introduced in detail. The test results showed that the control system can not only achieve 255 luminance levels but also 255 kinds of colors.

  • The influence of source impedance in electrical characterization of Solid state lighting sources

    This paper investigates the impact of source impedance in electrical characterization of solid state lighting products. A typical current spectrum is given and a model is used to show the significant influence brought about by variable source impedance. In practice, such changes in source impedance are inevitable for measurements done in different locations. A method is proposed to eliminate this impact by inserting a source impedance stabilization network between equipment under test and power supply. It is proved that this method guarantees less than 0.02 % variation in the measurement results which is acceptable for performance evaluation of SSL products.

  • GaN-based solid state lighting

    Summary form only given. Charge separation due to spontaneous and piezoelectric polarization inherent to the wurtzite structure has deleterious effects on the performance of most c-axis oriented devices. To overcome this problem, Nonpolar GaN, such as a-plain and m-plain GaN or semipolar GaN substrates have been grown. We reported the fabrication of violet InGaN/GaN Light Emitting Diodes (LEDs) on the first nonpolar m-plane (11macr00) GaN bulk substrates. The output power and External Quantum Efficiency (EQE) at a driving current of 20 mA were 28 mW and 45% respectively, with peak electroluminescence (EL) emission wavelength at 400 nm. The first nonpolar m-plane (11macr00) nitride laser diodes (LDs) were realized on low extended defect bulk m-plane GaN substrates. Broad area violet lasers were fabricated and tested under pulsed and CW conditions. These laser diodes had threshold current densities (J<sub>th</sub>) as low as 2.3 KA/cm<sup>2</sup> for pulsed and 7.5 kA/cm<sup>2</sup> for CW operation. Stimulated emission was observed around 405nm. Also, we fabricated high-efficient violet, blue, green and yellow LEDs, and violet laser diodes on semipolar GaN bulk substrates. The current biggest problem of nonpolar and semipolar devices is a limitation of the size of the GaN substrate. In order to make a real GaN bulk crystal, we have developed the ammonothermal method. Recently, we obtained the size of 6-8 mm bulk GaN crystal. The recent performance of nonpolar, semipolar and polar (c-plain) GaN-based devices, and bulk GaN growth are described.

  • Electronic packaging for solid-state lighting

    This talk addresses the developing field of solid-state lighting (SSL). The use of high-power light-emitting diode (HB-LED) in lighting is generally called SSL. We shall start with a review of the current status of SSL technology and its potential impact to our society. As in any solid-state and semiconductor electronics application, packaging technology plays an important role in the solid-state lighting component as well. We shall provide a review of current electronic package solutions and issues. We shall conclude the talk with our view on the future developments in solid-state lighting.

  • Analysis of impedance matching network on LED novel driving system based on the wireless power transfer

    In this paper, we investigated the impact of impedance matching network on transmission efficiency in LED novel driving system based on wireless power transfer (WPT) technology, which has the capability of transfer electrical power from a power source to an electrical load without any interconnecting wires. In order to improve the power transfer ability of the WPT system, the impedance matching technology was introduced in this work, and a magnetic coupling resonance system was applied to the wireless driving LED lighting system. Due to the flexibility of matching network, the π-type L-type matching networks were chosen for source and load side, respectively. With the help of Smith Software the value of the matching network can be calculated directly. To confirm the effect of the impedance matching circuit on the LED novel driving system, an actual circuit was verified. The experiment results show that the efficiency of WPT technology drive LED lighting system can be improved from 40% to 85%. We believe that the WPT technology drive LED lighting system will make these LED lighting products more available, portable. This new technology will also gain more and more attention in the global LED lighting market.

  • A novel surface treatment for the sliver ohmic contacts to P-GaN

    With the development of the GaN-based light-emitting diodes (LEDs), the need for p-GaN contacts with low resistivity, good thermal stability, and high reflectivity has become more urgent. In this paper, a novel method of surface treatment on p-GaN to form good ohmic contacts between p-GaN and Ag was proposed. We proposed a novel structure with Ag/ultrathin-ITO/p-GaN contact which shows a low contact resistivity as well as a high reflectance attributed to some isolated islands of ITO and the absence of Ni layer. The calculated ρcof the new structure which is lower than 7×10-2W/cm2based on the CTLM method showed that the Ag/ultrathin-ITO/p-GaN contact has a lower contact resistivity compared to the contact without the ultrathin ITO layer of which the ρcis higher than 2 W/cm2The Ag film cannot be ripped off by the tape which shows a good adhesion. The LEDs fabricated with this contacts showed a 30% higher luminance at 20mA forward currents as compared to the conventional LEDs.



Standards related to Solid State Lighting

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No standards are currently tagged "Solid State Lighting"