Heteroatom-containing spiro organic electroluminescent compound as well as preparation method and application thereof

The invention relates to a heteroatom-containing spiro organic electroluminescent compound as well as a preparation method and the application thereof. The structural formulas of the heteroatom-containing spiro organic electroluminescent compound are shown as a chemical formula 1 and a chemical formula 2, wherein m, n and p in the chemical formula 1 are 0 or 1; x independently represents a connecting bond, -O-, -S-, -SO2-, -C(R3)(R4)-, -N(R5)-, -Si(R6)(R7)-, -Sn(R8)(R9)-, and -Ge(R10) (R11); L1, L2 and L3 are link bonds, C6C30 arylene groups and ternary 15-membered heteroarylene groups; wherein R1 and R2 are the same or different from each other and are respectively and independently hydrogen, deuterium, halogen, cyano, carboxyl, nitro, hydroxyl, amino, silicon base and borane; Ar1-Ar4 each independently represents a C3-C30 cycloalkyl group and a ternary 20-membered heterocycloalkyl group, and an electron injection layer and/or an electron transport layer of an organic light-emitting device prepared from the