EP 1952449 A2 20080806 - OPTICAL DEVICES FEATURING TEXTURED SEMICONDUCTOR LAYERS
Title (en)
OPTICAL DEVICES FEATURING TEXTURED SEMICONDUCTOR LAYERS
Title (de)
OPTISCHE BAUELEMENTE MIT TEXTURIERTEN HALBLEITERSCHICHTEN
Title (fr)
DISPOSITIFS OPTIQUES COMPRENANT DES COUCHES A SEMI-CONDUCTEURS TEXTUREES
Publication
Application
Priority
- US 2006042483 W 20061031
- US 73203405 P 20051031
Abstract (en)
[origin: WO2007053624A2] A semiconductor sensor, solar cell or emitter, or a precursor therefor, has a substrate and one or more textured semiconductor layers deposited onto the substrate. The textured layers enhance light extraction or absorption. Texturing in the region of multiple quantum wells greatly enhances internal quantum efficiency if the semiconductor is polar and the quantum wells are grown along the polar direction. Electroluminescence of LEDs of the invention is dichromatic, and results in variable color LEDs, including white LEDs, without the use of phosphor.
IPC 8 full level
H01L 21/00 (2006.01); H01L 33/06 (2010.01); H01L 33/24 (2010.01); H01L 33/08 (2010.01); H01L 33/32 (2010.01)
CPC (source: EP)
H01L 33/06 (2013.01); H01L 33/24 (2013.01); H01L 21/0237 (2013.01); H01L 21/0243 (2013.01); H01L 21/02433 (2013.01); H01L 21/02458 (2013.01); H01L 21/02494 (2013.01); H01L 21/0254 (2013.01); H01L 33/08 (2013.01); H01L 33/32 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2007053624 A2 20070510; WO 2007053624 A3 20090430; CA 2627880 A1 20070510; CN 101506937 A 20090812; EP 1952449 A2 20080806; EP 1952449 A4 20110629; JP 2009515340 A 20090409
DOCDB simple family (application)
US 2006042483 W 20061031; CA 2627880 A 20061031; CN 200680049610 A 20061031; EP 06827176 A 20061031; JP 2008538970 A 20061031