InGaN/AlGaN-GaN based multiple-quantum well structure and preparation method thereof
A technology of quantum well and quantum well layer is applied in the field of InGaN/AlGaN-GaN-based multi-quantum well structure and its preparation, which can solve the problems of low recombination probability and low luminous efficiency, so as to increase the recombination probability, improve luminous efficiency, The effect of improving injection efficiency and radiation recombination efficiency
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[0032] This embodiment provides an LED structure, which is structured as figure 1 As shown, along the growth direction are sapphire substrate, low-temperature GaN nucleation layer 1, high-temperature undoped u-GaN layer 2, Si-doped n-GaN layer 3, and the InGaN / AlGaN-GaN-based multi-quantum Well structure 4, p-AlGaN electron blocking layer 5 and Mg-doped p-GaN layer 6.
[0033] Wherein, the structure of the InGaN / AlGaN-GaN-based multiple quantum well is as figure 2 As shown, along the growth direction, they are: the first AlGaN-GaN barrier layer, the InGaN quantum well layer with fixed In composition, the second AlGaN-GaN barrier layer, the InGaN quantum well layer with fixed In composition, and the third AlGaN- GaN barrier layer, InGaN quantum well layer with fixed In composition, fourth AlGaN-GaN barrier layer, InGaN quantum well layer with fixed In composition, fifth AlGaN-GaN barrier layer, InGaN quantum well layer with fixed In composition, The sixth GaN b...
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