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:
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.
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.
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
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.
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
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
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.
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.