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Details

DE2008917205

Publication Date	2006
Personal Author	Ferguson, I.
Page Count	42
Abstract	This two year program resulted in a novel broadband spectrally dynamic solid state illumination source (BSDLED) that uses a dual wavelength light emitting diode (LED) and combinations of phosphors to create a broadband emission that is real-time controllable. Four major focuses of this work were as follows: (1) creation of a two terminal dual wavelength LED with control of the relative intensities of the two emission peaks, (2) bandgap modeling of the two terminal dual LED to explain operation based on the doping profile, (3) novel use of phosphor combinations with dual LEDs to create a broadband spectral power distribution that can be varied to mimic a blackbody radiator over a certain range and (4) investigation of novel doping schemes to create tunnel junctions or equivalent buried current spreading layers in the III-nitrides.
Keywords	Light sources Illumination Energy efficiency Light emitting diodes Phosphors Spectrum Nitrides
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Georgia Tech Research Corp., Atlanta.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200821
Contract Number	FC26-03NT41954

Innovative Development of Next Generation and Energy Efficient Solid State Light Sources for General Illumination, Final.

Innovative Development of Next Generation and Energy Efficient Solid State Light Sources for General Illumination, Final.
DE2008917205

Publication Date	2006
Personal Author	Ferguson, I.
Page Count	42
Abstract	This two year program resulted in a novel broadband spectrally dynamic solid state illumination source (BSDLED) that uses a dual wavelength light emitting diode (LED) and combinations of phosphors to create a broadband emission that is real-time controllable. Four major focuses of this work were as follows: (1) creation of a two terminal dual wavelength LED with control of the relative intensities of the two emission peaks, (2) bandgap modeling of the two terminal dual LED to explain operation based on the doping profile, (3) novel use of phosphor combinations with dual LEDs to create a broadband spectral power distribution that can be varied to mimic a blackbody radiator over a certain range and (4) investigation of novel doping schemes to create tunnel junctions or equivalent buried current spreading layers in the III-nitrides.
Keywords	Light sources Illumination Energy efficiency Light emitting diodes Phosphors Spectrum Nitrides
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Georgia Tech Research Corp., Atlanta.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200821
Contract Number	FC26-03NT41954