scholarly journals Final LDRD report : design and fabrication of advanced device structures for ultra high efficiency solid state lighting.

2005 ◽  
Author(s):  
Daniel David Koleske ◽  
Katherine Huderle Andersen Bogart ◽  
Randy John Shul ◽  
Joel Robert Wendt ◽  
Mary Hagerott Crawford ◽  
...  
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Solid State Lighting ◽  
Device Structures ◽  
Report Design

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

Advanced technologies for high-efficiency GaInN LEDs for solid state lighting

2004 ◽  
Author(s):  
Volker Harle ◽  
Berthold Hahn ◽  
Johannes Baur ◽  
Michael Fehrer ◽  
Andreas Weimar ◽  
...  
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Solid State Lighting ◽  
Advanced Technologies

Phosphorescent White OLEDs for Solid-state Lighting

2009 ◽  
Vol 1212 ◽  
Author(s):  
Sean Xia ◽  
Peter Levermore ◽  
Vadim Adamovich ◽  
Chun Lin ◽  
Raymond C. Kwong ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Energy Efficient ◽  
High Efficiency ◽  
Solid State Lighting ◽  
Energy Star ◽  
Lighting Industry ◽  
Partial Energy ◽  
White Oleds ◽  
Color Rendering

AbstractWhite OLEDs (WOLEDTMs) fabricated using energy efficient phosphorescent OLED (PHOLEDTM) technology open up exciting new ways to develop efficient white lighting. WOLEDs have the potential to transform the lighting industry. In this presentation, phosphorescent WOLEDs with high conductivity transport layers will be discussed. White light can be generated by partial energy transfer from blue to green and red. Single WOLED stacks are demonstrated that match the Energy Star® lighting color criteria for 2700K and 3000K with high efficiency (˜80 lm/W) and high color rendering indices (˜80). Both devices had operational lifetimes (LT70%) over 30,000 hours measured from an initial luminance of 1,000 cd/m2. Different techniques to improve optical outcoupling will also be discussed.

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.

Sign in / Sign up

Export Citation Format

Share Document