Solid-State
Lighting: Lamp Targets and Implications for the Semiconductor Chip
Jeff Y. Tsao
Sandia National
Laboratories
E-mail:
jytsao@sandia.gov Tel: (505) 844-7092
Keywords: Solid-State
Lighting; GaN; White Light; LEDs; Illumination; III-Nitrides
Abstract:
A quiet revolution is underway. Over the next 5-10
years inorganic-semiconductor-based solid-state lighting technology is expected
to outperform first incandescent, and then fluorescent and
high-intensity-discharge, lighting. Along the way, many decision points and
technical challenges will be faced. To help understand these challenges, the
U.S. Department of Energy, the Optoelectronics Industry Development Association
and the National Electrical Manufacturers Association recently updated the U.S.
Solid-State Lighting Roadmap. In the first half of this paper, we present an
overview of the high-level targets of the inorganic-semiconductor part of that
update. In the second half of this paper, we discuss some implications of those
high-level targets on the GaN-based semiconductor chips that will be the
“engine” for solid-state lighting.