Light-emitting diode with composite polar face electron blocking layer
An electron blocking layer, light-emitting diode technology, applied in circuits, electrical components, semiconductor devices, etc., can solve the problems of large lattice mismatch, uneven distribution of carriers, low carrier recombination efficiency and low luminous efficiency, etc. Achieve the effect of increasing the probability and reducing the leakage current
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[0033] Example
[0034] Such as figure 2 Shown is an LED with a composite polarity surface electron blocking layer, including a sapphire substrate 201, a metal polarity surface n-type GaN layer 202, a metal polarity surface InGaN / GaN multiple quantum well layer 203, which are sequentially arranged from bottom to top. The metal polar plane p-type AlGaN layer 204 is composed of a metal polar plane p-type electron barrier layer 2051 of a GaN / AlGaN superlattice structure and a nitrogen polar plane p-type electron barrier layer 2052 of a GaN / AlGaN superlattice structure A composite polar plane p-type electron blocking layer 205, a nitrogen polar plane p-type GaN layer 206, an n electrode 207 arranged on the metal polar plane n-type GaN layer, and a nitrogen polar plane p-type GaN layer 的p-electrode 208.
[0035] The metal-polar plane n-type GaN layer 202 is used as the n-type region of the LED, and its thickness is between 0.5 and 2 μm. The layer is doped with Si element, and the free...
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