scholarly journals Advanced LED Solid-State Lighting Optics

Crystals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 758
Author(s):  
Ching-Cherng Sun ◽  
Shih-Hsin Ma ◽  
Quang-Khoi Nguyen
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Signal To Noise Ratio ◽  
Optical Design ◽  
Solid State Lighting ◽  
Luminous Efficacy ◽  
Light Emitting ◽  
New Applications ◽  
User Friendly ◽  
New Generation

Light-emitting diodes (LEDs) have been intensively studied for white-light lighting since their luminous efficacy exceeds 50 lm/W. Currently, the luminous efficacy of an LED light tube/bulb is almost above 100 lm/W. LED solid-state lighting (SSL) has unequivocally become the major light source in general lighting. The fact of high efficiency and other advantages of LED SSL is enough to penetrate all lighting scenarios. However, what people demand from new-generation lighting is not only in energy efficiency but also in lighting quality. Thus, how to make the lighting more user friendly is one of the important issues, and, here, optics is the key point. For making a collection with the discussions of the novel optical design in enhancing lighting efficiency in a more uniform illumination pattern, in higher sharpness for special lighting, in a higher signal-to-noise ratio for communication, in more functions for new applications, etc., this Special Issue of “Advanced LED Solid-State Lighting Optics” focuses on advanced applications in all aspects.

High-Efficiency Tris(8-hydroxyquinoline)aluminum (Alq3) Complexes for Organic White-Light-Emitting Diodes and Solid-State Lighting

2011 ◽  
Vol 17 (33) ◽  
pp. 9076-9082 ◽  
Author(s):  
César Pérez-Bolívar ◽  
Shin-ya Takizawa ◽  
Go Nishimura ◽  
Victor A. Montes ◽  
Pavel Anzenbacher
Keyword(s):  
Solid State ◽  
White Light ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Solid State Lighting ◽  
Light Emitting ◽  
White Light Emitting Diodes

Development of Nonpolar and Semipolar InGaN/GaN Visible Light-Emitting Diodes

MRS Bulletin ◽  
2009 ◽  
Vol 34 (5) ◽  
pp. 318-323 ◽  
Author(s):  
Daniel F. Feezell ◽  
Mathew C. Schmidt ◽  
Steven P. DenBaars ◽  
Shuji Nakamura
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Solid State Lighting ◽  
Polarization Anisotropy ◽  
Light Emitting ◽  
Bulk Gan ◽  
History Of ◽  
Blue Emitters ◽  
Semipolar Gan

AbstractThis article reviews the development of nonpolar and semipolar InGaN/GaN light-emitting diodes (LEDs), emphasizing structures on freestanding bulk GaN. A brief history of LED development on each orientation is provided, followed by a discussion of the most relevant and recent results. The context is related to several current LED issues, such as the realization of high-efficiency white solid-state lighting, potential solutions to the “green gap,” and applications for polarized emitters. The section on nonpolar LEDs highlights high-power violet and blue emitters and considers the effects of indium incorporation and substrate miscut. The section on semipolar GaN reviews the development of LEDs in the violet, blue, green, and yellow regions and highlights the potential of InGaN/GaN LEDs as an alternative technology to AlInGaP for yellow emitters. A brief review of polarization anisotropy also is included for each orientation. Finally, a two source white light system utilizing a nonpolar blue LED and a semipolar yellow LED is presented.

52.2: Hybrid Tandem White OLEDs with High Efficiency and Long Life-time for AMOLED Displays and Solid-State Lighting

2010 ◽  
Vol 41 (1) ◽  
pp. 778 ◽  
Author(s):  
Tukaram K. Hatwar ◽  
Jeffrey P. Spindler ◽  
Marina Kondakova ◽  
David Giesen ◽  
Joseph Deaton ◽  
...  
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Life Time ◽  
Solid State Lighting ◽  
Long Life ◽  
White Oleds

High-efficiency GaN-based laser diodes for solid-state lighting

2008 ◽  
Author(s):  
S. Saito ◽  
Y. Hattori ◽  
M. Sugai ◽  
Y. Harada ◽  
H. Jongil ◽  
...  
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Laser Diodes ◽  
Solid State Lighting
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