63‐1: <i>Invited Paper:</i> Ultra‐Efficient Fourth‐Generation pTSF OLED Devices and Products

Phosphor‐assisted thermally activated delayed fluorescence sensitized fluorescence (pTSF) organic light‐emitting diodes (OLEDs) have attracted much attention and have been regarded as the fourth‐generation OLED technology since its invention in 2022. In this work, through material optimization, device optimization, and process optimization, we fabricate a series of green pTSF OLED based devices and products, which realize high efficiency, long lifetime, and high color purity, manifesting the bright further of pTSF technology in mass production.