Dr. Helmut Bechtel
Group Leader: Phosphor Application at Lumileds Germany GmbH
SPIE Involvement:
Author
Publications (5)

PROCEEDINGS ARTICLE | August 18, 2010
Proc. SPIE. 7784, Tenth International Conference on Solid State Lighting
KEYWORDS: Refractive index, Light emitting diodes, External quantum efficiency, Scattering, Particles, Crystals, Quantum efficiency, Light scattering, Laser scattering, Blue light emitting diodes

PROCEEDINGS ARTICLE | September 12, 2008
Proc. SPIE. 7058, Eighth International Conference on Solid State Lighting
KEYWORDS: Light emitting diodes, Chemical species, Luminescence, Crystals, Calcium, Indium gallium nitride, Silicates, Barium, Europium, Strontium

PROCEEDINGS ARTICLE | September 2, 2008
Proc. SPIE. 7058, Eighth International Conference on Solid State Lighting
KEYWORDS: Light emitting diodes, LED lighting, Scattering, Ceramics, Light scattering, Light sources and illumination, General lighting, YAG lasers, Blue light emitting diodes, Absorption

PROCEEDINGS ARTICLE | September 14, 2007
Proc. SPIE. 6669, Seventh International Conference on Solid State Lighting
KEYWORDS: Light emitting diodes, Optical spheres, Chemical species, Luminescence, Crystals, Silicon, Aluminum, Barium, Europium, Strontium

PROCEEDINGS ARTICLE | November 10, 2004
Proc. SPIE. 5519, Organic Light-Emitting Materials and Devices VIII
KEYWORDS: Thin films, Silica, Reflection, Organic light emitting diodes, Polymers, Glasses, Particles, Luminescence, Atomic force microscopy, Atmospheric particles

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