Recent Advances in Template-Based Printing Techniques of Metal Halide Perovskites

Metal halide perovskites have emerged as promising materials for next-generation optoelectronic devices due to their exceptional optical properties, cost-effective solution processability, and tunable emission. Recent advancements in perovskite light emitters highlight their potential for both photoluminescence down-conversion- and electroluminescence-based displays. However, achieving precise patterning of perovskite films at sub-micron to micrometer scales remains a critical challenge for developing high-resolution micro-displays. In this article, we briefly review template-based printing techniques, including nano imprint lithography (NIL) and nano transfer printing (NTP), as efficient approaches for perovskite patterning. NIL allows for rapid and reproducible patterning using mold stamps, while NTP enables the precise transfer of pre-formed structures to substrates, facilitating pixel array formation. These techniques have been successfully applied to create perovskite patterns for photodetectors, light-emitting diodes, and lasers without significant material degradation. We conclude by discussing future research directions, emphasizing the potential of template-based printing for advancing augmented and virtual reality applications.