Light emitting device

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – Active layer of indirect band gap semiconductor

Reexamination Certificate

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C257S086000, C257S094000, C257S101000, C257S103000

Reexamination Certificate

active

10923830

ABSTRACT:
An n-type layer of the opposite conduction type composed of n-GaN is formed between a light emitting layer and a p-type cladding layer composed of p-AlGaN. The bandgap of the n-type layer of the opposite conduction type is larger than the bandgap of the light emitting layer and is smaller than the bandgap of the p-type cladding layer.

REFERENCES:
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patent: 6285697 (2001-09-01), Landwehr et al.
patent: 6411637 (2002-06-01), Hashimoto
patent: 6803596 (2004-10-01), Hata
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patent: 11-251687 (1999-09-01), None
patent: 11-340559 (1999-12-01), None
patent: 2000-332364 (2000-11-01), None
Piezoelectricity—“An Introduction to the Theory and Application of Electromechanical Phenomena in Crystals” by Walter Guyton Cady, Ph.D., Sc.D.; Professor of Physics Emeritus, Wesleyan University; Dover Publications, Inc. New York 1964.
Landolt-Bornstein—“Numerical Data and Functional Relationships in Science and Technology” by K. - H. Hellwege, (Subvolume a) pp. 174, 241, 270, 302 and 322. vol. 17 Semiconductors; Physics of Group IV Elements and III-V Compounds; Springer-Verlag Berlin—Heidelberg—New York 1982.
Landolt-Bornstein—“Numerical Data and Functional Relationships in Science and Technology” by K.-H. Hellwege, (Subvolume b) pp. 49, 102, 103, 145 ,160, 186, 215, 228, 268, 272 and 301. vol. 17 Semiconductors; Physics of Group III: Crystals and Solid State Physics and Physics of II-VI and I-VII Compounds; Semimagnetic Semiconductors; Springer-Verlag Berlin—Heidelberg—New York 1982.
Andenet Alemu et al., “Optical properties of wurtzite GaN epilayers grown on A-plane sapphire”, Physical Review B, vol. 57, No. 7, dated Feb. 15, 1998, pp. 3761-3764.

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