RGBArrays for Micro-Light-Emitting Diode ApplicationsUsing Nanoporous GaN Embedded with Quantum Dots
ACS Applied Materials & Interfaces(2020)
摘要
The\nmultiple light scattering of nanoporous (NP) GaN was systematically\nstudied and applied to the color down-conversion for micro-light-emitting\ndiode (LED) display applications. The transport mean free path (TMFP)\nin NP GaN is 660 nm at 450 nm (light wavelength), and it decreases\nwith a decreasing wavelength. It was observed that the short TMFP\nof the NP GaN increased the light extinction coefficient at 370 nm\nby 11 times. Colloidal QDs were loaded into a half 4″ wafer\nscale NP GaN, and 96 and 100% of light conversion efficiencies for\ngreen and red were achieved, respectively. By loading green and red\nQDs selectively into NP GaN mesas, we demonstrated the RGB microarrays\nbased on the blue-violet pumping light with green and red color converting\nregions.
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