Fig. 6From: Vertical-Injection AlGaInP LEDs with n-AlGaInP Nanopillars Fabricated by Self-Assembled ITO-Based NanodotsSchematic diagrams and SEM images of a, c the AlGaInP-based VI-LEDs with the n-AlGaInP nanopillars and b, d the VI-LEDs with the surface-roughened n-AlGaInPBack to article page