1.5V，全球最低工作电压白光OLED器件问世

Core Viewpoint - Tokyo Science Research Institute has developed the world's lowest operating voltage white OLED device, which operates at 1.5V [1]. Group 1: Research and Development - The research team, led by Professor Seiichiro Izawa, previously focused on low-voltage blue OLED devices using triplet-triplet annihilation (TTA) for blue light emission [2]. - The new OLED devices, named up-conversion OLED or UC OLED, incorporate a sky-blue dopant (polyvinyl dopant, Tbpe) and a yellow dopant (red fluorescent), which together produce white light [2]. - Despite the low operating voltage, the OLED devices currently face challenges related to efficiency and color stability, with ongoing efforts to improve performance [2].