Molecular bottom-up methods for fabricating perovskite solar cells, perovskite materials fabricated thereof, and optoelectronic devices including same

Patent metadata

Field	Value
Publication number	US-11228009-B2
Application number	US-201916561528-A
Country	US
Kind code	B2
Filing date	Sep 5, 2019
Priority date	Sep 5, 2019
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

Disclosed is a building blocks method for low-cost fabrication of single crystal organometallic perovskite materials with pseudo crystallized hole transporting material layer. This method uses self-assembled molecular monolayers SAM as building blocks. This approach enables creation of defect-free perovskite crystals with desired morphology and crystallinity in a controlled way. Additionally, the crosslinked molecular layers SAM play a role of hole transporting materials HTM and encapsulation against diffusion of metal atoms and gas molecules, thus enhancing the stability of the perovskite materials. This method is cost effective and can be scaled up.

First claim

The invention claimed is:

1. A perovskite device comprising:
a substrate comprising a metallic material;
a cross-linked self-assembled molecular monolayer on top of the substrate;
a perovskite material on top of the cross-linked self-assembled molecular monolayer, wherein the perovskite material is grown on the cross-linked self-assembled molecular monolayer to create uniform and defect free perovskite single crystal; and
an electron-collector electrode deposited on top of the perovskite material,
wherein the cross-linked self-assembled molecular monolayer comprises crosslinked self-assembly molecules terminated with sulfur
wherein the cross-linked self-assembled molecular monolayer functions as a hole transporting layer so that the perovskite device operates without a separate organic hole transport layer.

2. The perovskite device of claim 1 , wherein the perovskite material comprises a single-crystal layer of MAPbX 3 , where X is Cl, Br, or I.

3. The perovskite device of claim 1 , wherein the substrate comprises a material selected from the group consisting of gold, silver, copper, platinum, zinc, nickel, graphene, iron, carbon-nanotube, aluminum, and combinations thereof.

Assignees

• Qatar Found For Eduction Science And Community Development
• Qatar Found Education Science & Community Dev

Inventors

• Hamoudi Hicham
• Berdiyorov Golibjon

Classifications

• H10K85/50

  Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3 · CPC title

• H10K30/10

  comprising heterojunctions between organic semiconductors and inorganic semiconductors · CPC title

• C30B7/14 Primary

  the crystallising materials being formed by chemical reactions in the solution · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• C30B29/12

  Halides · CPC title