Thermodynamic-driven polychromatic quantum dot patterning for light-emitting diodes beyond eye-limiting resolution

摘要

Schematic of iTP process. The two key stages of iTP are emphasized with dotted magenta boxes. SEM images of printed QD arrays in different resolutions: single-particle, 350 nm, 1 µm, 5 µm, and entire film (from left to right). SEM images of topographic trench template fabricated on Si substrate, patterned QD film in trench domain, the Si template after QDs are picked, and printed QD pattern (from left to right). SEM image of printed QD pixel array (500 nm pixel width). Topographic AFM images of the Si template ( ), picked ( ), and printed ( ) QD pixel. AFM thickness profile plot of the Si template, picked and printed QD pixel.