DocumentCode :
448275
Title :
IIIinitride ultraviolet micro- and nano-photonics
Author :
Lin, J.Y. ; Jiang, H.X.
Author_Institution :
Dept. of Phys., Kansas State Univ., Manhatten, KS, USA
Volume :
2
fYear :
2005
fDate :
22-27 May 2005
Firstpage :
1441
Abstract :
This paper provides a brief overview on recent advances in the ultraviolet (UV) photonic materials and devices based upon III-nitrides and the exploitation of chip- level innovation, such as the incorporation of micro- and nano-scale photonic device integration and photonic crystals (PCs), to enhance the extraction efficiency of UV light emitting diodes (LEDs). By inserting a high quality AlN epilayer that serves as a template for the subsequent growth of AlGaN alloys and adopting delta-doping scheme, we have greatly reduced the dislocation density and thereby enhanced the doping efficiency. By incorporating AlN and highly conductive n-AlGaN into the actual device structure, we have significantly improved the performance of deep UV LEDs (λ<300 nm). It was shown that III-nitride PCs provide 3 times enhancement in output power and 4 times enhancement in modulation speed in UV LEDs. The demonstration of photonic band-gap (PBG) materials active in the UV and visible wavelengths opens many new applications.
Keywords :
III-V semiconductors; aluminium compounds; integrated optics; light emitting diodes; photonic band gap; photonic crystals; semiconductor doping; wide band gap semiconductors; AlGaN; AlN; AlN epilayer; III-nitrides; UV light emitting diode; delta-doping scheme; microscale photonic device integration; nanoscale photonic device integration; photonic band-gap material; photonic crystal; ultraviolet photonic material; Aluminum gallium nitride; Crystalline materials; Doping; Light emitting diodes; Nanoscale devices; Personal communication networks; Photonic band gap; Photonic crystals; Power generation; Technological innovation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Lasers and Electro-Optics, 2005. (CLEO). Conference on
Print_ISBN :
1-55752-795-4
Type :
conf
DOI :
10.1109/CLEO.2005.202152
Filename :
1573218
Link To Document :
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