Perovskite Quantum Dots with Ultralow Trap Density by Acid Etching‐Driven Ligand Exchange for High Luminance and Stable Pure‐Blue Light‐Emitting Diodes
Creating highly efficient and stable pure blue (≈ 470 nm) perovskite quantum dots (PQDs) remains a considerable challenge. Here, we report an effective synthesis strategy of ultra-small (≈ 3.8 nm)...
Surface-exchanged, partially pyridine-functionalized colloidal quantum dot-based light-emitting diodes (QD-LEDs) exhibit a low turn-on voltage and high brightness.