Method for improving stability of perovskite light-emitting diode and perovskite light-emitting diode

• Main Authors: WANG JIANPU, KOREMASA, CAO CHENSI, WANG AIRU
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: ELECTRICITY

The invention discloses a method for improving the stability of a perovskite light-emitting diode and the perovskite light-emitting diode. According to the method, the surface of perovskite particles and/or a perovskite film is modified by taking a fluorine-containing compound as a modifier. The perovskite is modified by using the fluorine-containing compound, fluorine-containing compound molecules are adsorbed on the surface interface of the perovskite, and the wettability of the perovskite is reduced, so that an upper hole transport material is flatly spread on the perovskite at the bottom and is prevented from permeating into gaps of the perovskite, and a'hole '-shaped interface structure is formed between the transport layer and particle gaps. According to the interface structure, the contact area between the charge transport layer and the perovskite and the contact area between the charge transport layer and the perovskite and the contact area between the charge transport layer and the perovskite and the