A seed-mediated and double shell strategy to realize large-size ZnSe/ZnS/ZnS quantum dots for high color purity blue light-emitting diodes

Blue ZnSe/ZnS/ZnS quantum dots were prepared using a seed-mediated and double shell strategy, and the quantum dot-based light-emitting diode with electroluminescence spectrum peaked at 446 nm and full widths at half-maximum of 16 nm was fabricated.