Advancing Ultrathin Skin-attachable Displays with UltraHigh-resuolution Full-color Perovskite Nanocrystal Patterning

Abstract

High-definition red/green/blue (RGB) pixels and deformable form factors is vital for the development of next-generation advanced displays. Here in, we present innovative approach using ultrahigh-resolution full-color perovskite nanocrystal (PeNC) patterning for ultrathin wearable displays. A double-layer transfer printing method is developed to prevent internal cracking of PeNC film while transfer process, resulting in RGB pixelated PeNC patterns with 2550 pixels per inch and monochromatic patterns with 33,000 line pairs per inch with achieving 100% transfer yield. Transfer-printed perovskite light-emitting diodes (PeLEDs) exhibit remarkable electroluminescence characteristics compared to previously reported printed PeLEDs. Additionally, double-layer transfer printing enables the fabrication of ultrathin multicolor PeLEDs operating on curvilinear surfaces under mechanical deformation. These results demonstrate promising potential of PeLEDs for high-definition full-color wearable displays.