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Solid-State Lighting: A Case Study in Science and Technology Evolution

10,000. Growth of S&T (1976-2004): Electroluminescent Materials & Phenomena. Growth of SSL S&T: 1976-2005. 1,000. 10-15%/yr. Inorganic. US Patents (9,104). 100. Articles (10,548). Number of Articles or Patents. 20-30%/yr. Organic. 10. US Patents (2,766). Articles

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Solid-State Lighting: A Case Study in Science and Technology Evolution

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  1. 10,000 Growth of S&T (1976-2004): Electroluminescent Materials & Phenomena Growth of SSL S&T: 1976-2005 1,000 10-15%/yr Inorganic US Patents (9,104) 100 Articles (10,548) Number of Articles or Patents 20-30%/yr Organic 10 US Patents (2,766) Articles (9,534) 1 1970 1980 1990 2000 2010 Year Solid-State Lighting:A Case Study in Science and Technology Evolution Jeff Tsao Sandia National Laboratories Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy’s National Security Administration under Contract DE-AC04-94AL85000.

  2. Driving Forcesfor Science & Technology Evolution A2 A4 A1 A3 Applications Science & Technology

  3. Extrinsic Applications Drivers for SSL S&T

  4. General Illumination Drivers for SSL S&T

  5. Cost of Light Evolution Cost of Operating Capital Light Cost Cost = + Electricity Power Delivery Cost Mainte-nance Cost Luminous Efficacy Lifetime

  6. Summary Market (profit) Non-market (energy savings) Driver General Illumination LCD Backlights General Illumination Traffic Signals Applications CRI CoL $/Win lm/Win lm/W Science & Technology

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