| abstract |
Disclosed are a hole transport material, a preparation method therefor, and an organic light emitting device, the hole transport material comprising a compound having a chemical structure represented by formula I, Z comprising a carbon atom or a silicon atom, X and Y each independently comprising: an oxygen atom, a sulfur atom, formula II, or formula III, and any one or two among R1, R2, R3, and R4 being electron-donating groups, and the remainder being hydrogen atoms. |