High-Performance, High-Resolution Quantum Dot Light-Emitting\nDiodes with Self-Assembly Single-Molecular Interface Modification

With the development of near-eye\ndisplays, the demands for display\nresolution and performance are increasing. Quantum dot performance\nis virtually independent of pixel size, making it an efficient way\nto display ultrahigh resolution. However, the low efficiency of high-resolution\nquantum dot devices has been an urgent technical bottleneck to be\nsolved. Here, we constructed a dense single-molecule modification\nlayer and a leakage current blocking layer for high-resolution devices\nusing self-assembly, thereby realizing ultrahigh-resolution, high-efficiency,\nand stable high-resolution quantum dot light-emitting diodes (QLEDs).\nThe peak external quantum efficiencies of the red devices are 24.68%\n(8759 PPI) and 19.54% (26075 PPI), respectively, with an exceptional\nlong lifetime (<i>T</i><sub>95</sub>@1000 nit) up to 4871\nh. In addition, we explored the feasibility of this modification strategy\non non-Cd-based quantum dots. In conclusion, our strategy effectively\nimproves the performance of high-resolution devices and provides a\nsuperior approach for realizing near-eye display applications.