Title: Solvent-free, solid phase synthesis of hybrid lead halide perovskites with superior purity

Abstract

A method of synthesizing a mixed-halide perovskite is disclosed herein. The method includes the steps of mixing a first single-halide perovskite and a second single-halide perovskite to form a solid phase mixture and heating the solid phase mixture at a temperature below a first decomposition temperature of the first single-halide perovskite and below a second decomposition temperature of the second single-halide perovskite for a time sufficient to form the mixed-halide perovskite. During the mixing, the first and second single-halide perovskite are both in the solid phase. A mixed-halide perovskite made according to the method is also disclosed herein. The mixed-halide perovskite is free of amorphous and/or semicrystalline phases. The mixed-halide perovskite can be utilized in a photovoltaic cell in a solar panel.

Inventors:

Vela-Becerra, Javier; Rosales, Bryan A.

Issue Date:

2020-12-22

Research Org.:

Ames Lab., Ames, IA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1771749

Patent Number(s):

10872734

Application Number:

15/854,596

Assignee:

Iowa State University Research Foundation, Inc. (Ames, IA)

Patent Classifications (CPCs):

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS

Show more

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L51/422 - {Majority carrier devices using sensitisation of widebandgap semiconductors, e.g. TiO2
H01L51/0025 - {Purification process of the organic semiconductor material}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS

H01G9/2004 - {characterised by the electrolyte, e.g. comprising an organic electrolyte}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L51/441 - {Electrodes}

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM

C07F7/24 - Lead compounds

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E10/549 - organic PV cells
Y02E10/542 - Dye sensitized solar cells

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS

H01G9/2077 - {Sealing arrangements, e.g. to prevent the leakage of the electrolyte}
H01G9/0029 - {Processes of manufacture}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L51/4253 - {comprising bulk hetero-junctions, e.g. interpenetrating networks}
H01L51/005 - {Macromolecular systems with low molecular weight, e.g. cyanine dyes, coumarine dyes, tetrathiafulvalene
H01L51/448 - {Passivation, containers, encapsulations}
H01L51/0077 - {Coordination compounds, e.g. porphyrin}

Show less

DOE Contract Number:  

AC02-07CH11358

Resource Type:

Patent

Resource Relation:

Patent File Date: 12/26/2017

Country of Publication:

United States

Language:

English