DocumentCode
3041100
Title
Selective zinc diffusion for GaAs0.6P0.4 LED arrays
Author
Lawrence, David J. ; Heineman, Dawn L.
Author_Institution
Integrated Sci. & Technol. Program, James Madison Univ., Harrisonburg, VA, USA
fYear
1999
fDate
1999
Firstpage
87
Lastpage
90
Abstract
The fabrication of linear red LED arrays in an undergraduate laboratory is described. Isolated p+-n junctions are formed by selective zinc diffusion into n-type GaAs0.6P0.4 wafers. The performance of several thin film diffusion mask materials is compared. The investigated mask materials include phosphosilicate glass, silicon nitride, and silicon. Enhanced lateral diffusion of zinc under the mask along the SiO2 -GaAs0.6P0.4 interface is observed for all of these mask materials. Phosphosilicate glass films provide the best results, however, even in this case, the lateral diffusion is nearly nine times the diffusion depth. Electrical and optical characteristics of the resulting LED arrays are presented
Keywords
III-V semiconductors; diffusion; gallium arsenide; light emitting diodes; optical arrays; zinc; GaAs0.6P0.4 LED array; GaAs0.6P0.4:Zn; SiO2-GaAs0.6P0.4 interface; fabrication; lateral diffusion; p+-n junction; phosphosilicate glass; selective zinc diffusion; silicon; silicon nitride; thin film diffusion mask; Fabrication; Gallium arsenide; Glass; Laboratories; Light emitting diodes; Optical arrays; Optical films; Silicon; Transistors; Zinc;
fLanguage
English
Publisher
ieee
Conference_Titel
University/Government/Industry Microelectronics Symposium, 1999. Proceedings of the Thirteenth Biennial
Conference_Location
Minneapolis, MN
Print_ISBN
0-7803-5240-8
Type
conf
DOI
10.1109/UGIM.1999.782828
Filename
782828
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