Preparation method of red-light all-inorganic hybrid perovskite quantum dot ink and flexible light-emitting diode of red-light all-inorganic hybrid perovskite quantum dot ink

The invention provides a preparation method of red-light all-inorganic hybrid perovskite quantum dot ink and a flexible light-emitting diode of the red-light all-inorganic hybrid perovskite quantum dot ink. The preparation method comprises the steps of preparing perovskite quantum dot ink; uniformly depositing a PEDOT:PSS solution on an ITO surface of a substrate through spin coating; depositing aPoly-TPD solution on the surface of a deposited PEDOT:PSS film through spin coating; uniformly depositing the red-light all-inorganic hybrid perovskite quantum dot ink on the surface of a deposited Poly-TPD film through ink-jet printing; and uniformly depositing a prepared ZnO solution on the surface of a deposited red-light all-inorganic hybrid perovskite quantum dot film through ink-jet printing; and depositing Al on the surface of a deposited ZnO film through evaporation coating to obtain a quantum dot light-emitting diode. Preparation of the quantum dot light-emitting diode is achieved byadopting an ink-jet print