A gallium nitride-based light-emitting diode epitaxial wafer and its preparation method
A light-emitting diode, gallium nitride-based technology, applied in semiconductor devices, electrical components, circuits, etc., can solve problems affecting the crystal quality of epitaxial wafers, block dislocations, reduce stress and defects, and alleviate lattice mismatch. Effect
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0028] An embodiment of the present invention provides a GaN-based light-emitting diode epitaxial wafer. figure 1 A schematic structural diagram of a gallium nitride-based light-emitting diode epitaxial wafer provided by an embodiment of the present invention. see figure 1 , the GaN-based light-emitting diode epitaxial wafer includes a substrate 10, a buffer layer 20, a quality improvement layer 30, an N-type semiconductor layer 40, an active layer 50, and a P-type semiconductor layer 60, the buffer layer 20, the quality improvement layer 30, The N-type semiconductor layer 40 , the active layer 50 and the P-type semiconductor layer 60 are sequentially stacked on the substrate 10 .
[0029] figure 2 Schematic diagram of the structur...
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