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Jeff Tsao Next Semic Rev ABQ Academy SAND2010-1957P 2010 March 31 1/8 The Next Semiconductor Revolution: This Time Its Lighting! Earth at Night (courtesy.

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Presentation on theme: "Jeff Tsao Next Semic Rev ABQ Academy SAND2010-1957P 2010 March 31 1/8 The Next Semiconductor Revolution: This Time Its Lighting! Earth at Night (courtesy."— Presentation transcript:

1 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 1/8 The Next Semiconductor Revolution: This Time Its Lighting! Earth at Night (courtesy of NASA) Jeff Tsao Physical, Chemical & Nano Sciences Center Sandia National Laboratories Your Grandparents Vacuum Triode Your Parents Cathode Ray Tube (CRT) Your Fluorescent Tube From Dictionary.com. How Fluorescent Lamps Work. Triode vacuum tube.

2 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 2/8 Semiconductor Light-Emitting Diode (LED) Photons The periodic table, courtesy of BBS.

3 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 3/8 200 Years of Lighting Technology Year Efficiency (%) Fluorescence Incandescence Fire Color-Filtered Incandescence Oil Gas Kerosene Gas Mantle Carbon Filament Tungsten Filament SiC InGaN GaAsP GaP:Zn,O GaAsP:N AlGaAs AlInGaP Solid-State Lighting Electric bulb from Neloux, courtesy of KMJ. iki/File:Gluehlampe_01_KMJ.jpg Fluorescent Tube chtaube jpg Candle burning. i/File:Candleburning.jpg Bridgelux Helieon Solid-State Lamp. ieon.html

4 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 4/8 Light-Emitting Diodes and Applications for Colored Light LED Traffic Light, courtesy of Syafiqshahalam. le:LED_Traffic_Lights.jpg Sharp QuadPixel RGBY LED-backlit LCD Display. NASDAQs Giant Video Display in Times Square, New York (Jeff Tsao) Rear Combination Lamp (LumiLeds) Microvision Pico Projector.

5 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 5/8 Light from the Sun and Moon: Trilobites, Birds, Mammals, Primates, Humans Asaphus species (Trilobite) picture taken by DanielCD. Olive baboon in Kenya; courtesy of Ryan Harvey; Gray wolf, canis lupus, courtesy of Chris Muiden. Red Lory (Eos bornea) upper body preening feathers jpg A baby wearing many items of winter clothing: headband, cap, fur-lined coat, shawl and sweater. Courtesy of Andrew Vargas, Clovis, United States. Full moon view from Earth in Belgium, courtesy of Luc Viatour. oon_Luc_Viatour.jpg Full-disk view of the X-ray Sun and was produced by the Yohkoh solar observatory in himage.gif Bridgelux Helieon Solid-State Lamp. ieon.html

6 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 6/8 Making White Light from Colored Light 16%-Efficient SSL Early %-Efficient SSL 750 Human eye response (lumens per Watt) Light source spectral power distributions (Watts per nm) and their spectral reflectances Wavelength (nm) Munsell Samples Mixing Optics RYGB LEDs White

7 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 7/8 Solid-State Lighting and Applications for White Light Surefire U2 flashlight. Joseph Wright (1768) An Experiment on a Bird in the Air Pump Canon PowerShot A95.

8 Jeff Tsao Next Semic Rev ABQ Academy SAND P 2010 March 31 8/8 How Fluorescent Lamps Work. Acknowledgements (colleagues): Roland Haitz, Tom Brennan Jerry Simmons, Mike Coltrin, Mary Crawford, and Sandias Solid-State-Lighting Science Team (http://ssls.sandia.gov/) Acknowledgements (sponsors): Work at Sandia National Laboratories was supported by Sandias Solid-State-Lighting Science Energy Frontier Research Center, funded by the U.S. Department of Energy, Office of Basic Energy Sciences. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U.S. Department of Energys National Security Administration under Contract DE-AC04-94AL85000.


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