The present invention relates to the field of
organic electroluminescence, and in particular to a fused-ring
carbazole tetradentate
metal platinum (II) complex and a use thereof, and an electronic device. According to the present invention, the interaction between molecules is reduced by means of the introduction of diphenyl, and a fused-ring
carbazole system is introduced at different positions of
carbazole to improve the component proportion of a localized state (LE) in an excited
triplet state of a cyclic tetradentate
platinum (II) complex, so that the cyclic tetradentate
platinum (II) complex has a low shoulder peak to improve the purity of
luminescence of material molecules. Materials involved in the present invention all have good
chemical stability and
thermal stability, and are easy to prepare evaporated
OLED devices. The combination with a fluorescent
doping material can balance transport of holes and electrons, and
energy transfer between a subject and an object is more efficient. An organic electroluminescent device manufactured by using the compound of the present invention as a luminous layer has markedly improved current efficiency, markedly prolonged service life, and a markedly reduced turn-on
voltage. In particular, the joint use with phosphorescent-sensitized
boron-containing compounds can improve the purity of
luminescence of devices.