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	Efficiency light emitting diode
	-
	1976-06-30
著作权人	RCA CORPORATION
专利号	GB1440846A
国家	英国
文献子类	授权发明
其他题名	Efficiency light emitting diode
英文摘要	1440846 Electroluminescence RCA CORPORATION 4 Nov 1974 [12 Nov 1973] 47659/74 Heading C4S [Also in Division H1] Spaced heterojunctions 20, 22 of a double heterojunction semiconductor light-emitting diode 10 mutually diverge towards the lightemergent surface 18 so that the proportion of generated light striking the junctions 20, 22 at less than the critical angle # c for total internal reflection is greater than in conventional paralleljunction LEDs, resulting in greater efficiency of light emission. The junctions 20, 22 may be as shown, or one of them may be normal to the surface 18. The device shown comprises respectively p and n type regions 12 and 16 of Al x Ga 1-x As separated by a region 14 of of p or n type or comprising portions of each type. The condition x>y is satisfied so that the energy gap of regions 12 and 16 is greater than that of region 14, resulting in a higher refractive index in the region 14. The successive layers may be deposited by liquid phase epitaxy following polishing of the substrate material to the desired angle.
公开日期	1976-06-30
申请日期	1974-11-04
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/39653]
专题	半导体激光器专利数据库
作者单位	RCA CORPORATION
推荐引用方式 GB/T 7714	-. Efficiency light emitting diode. GB1440846A. 1976-06-30.

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