US 2025/0104934 A1 · LIGAND MODIFIED PEROVSKITE OPTOELECTRONIC DEVICES

Abstract

A method of ligand-induced regional modification of a perovskite film of perovskite optoelectronic device can include generating a ligand atmosphere, exposing a perovskite optoelectronic device in the ligand atmosphere, and removing the perovskite optoelectronic device from the ligand atmosphere. Methods for improving the performance and stability of perovskite optoelectronic devices are performed by using a ligand-induced modification of complete devices at room temperature. This post-device treatment, completely separated from the fabrication process of common perovskite optoelectronic devices, provides a general strategy to improve the stability of different completed perovskite optoelectronic devices (i.e., perovskite solar cells, perovskite light-emitting diodes, and photodetectors) without introducing any undesirable impurities during device fabrication.

Claims17

Dependent claims

A method of ligand-induced treatment on the lateral region of a perovskite optoelectronic device, the method comprising:

generating a ligand atmosphere;
exposing the perovskite optoelectronic device in the ligand atmosphere;
and
removing the perovskite optoelectronic device from the ligand atmosphere, wherein a perovskite film of the perovskite optoelectronic device is an organic-inorganic hybrid material or an inorganic material, and has a form of ABX3, where A is CH3NH3+;
B is Pb, Sn, Bi, or any combination thereof;
and X is I, Cl, Br, SCN, or any combination thereof;
wherein a ligand for generating the ligand atmosphere is diethylentriamine.

4 more elements

Dependencies are inferred from the claim text.

Ligand modified perovskite optoelectronic devices

Life of this patent

Ligand modified perovskite optoelectronic devices

Life of this patent

Abstract

Claims17