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Title: Method of making a perovskite layer at high speed

Abstract

A method of making a perovskite layer includes providing a flexible substrate; providing a perovskite solution comprising an initial amount of solvent and perovskite precursor materials and a total solids concentration between 30 percent and 70 percent by weight of its saturation concentration; depositing the perovskite solution on the flexible substrate; removing a first portion of the solvent from the deposited perovskite solution and increasing the total solids concentration of the perovskite solution to at least 75 percent of its saturation concentration with a first drying step; and removing a second portion of the solvent from the deposited perovskite solution with a second drying step having a higher rate of solvent evaporation that causes saturation and a conversion reaction in the deposited perovskite solution resulting in perovskite crystal formation or formation of a perovskite intermediate phase, wherein the first drying step dwell time is at least 5 times longer than the second drying step dwell time.

Inventors:
; ; ;
Issue Date:
Research Org.:
Energy Materials Corp., Rochester, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1840400
Patent Number(s):
11108007
Application Number:
16/426,191
Assignee:
Energy Materials Corporation (Rochester, NY)
Patent Classifications (CPCs):
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
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
EE0008128
Resource Type:
Patent
Resource Relation:
Patent File Date: 05/30/2019
Country of Publication:
United States
Language:
English

Citation Formats

Christensen, Scott Kenneth, Li, Qi, Tombs, Thomas Nathaniel, and DeLuca, Stephan J. Method of making a perovskite layer at high speed. United States: N. p., 2021. Web.
Christensen, Scott Kenneth, Li, Qi, Tombs, Thomas Nathaniel, & DeLuca, Stephan J. Method of making a perovskite layer at high speed. United States.
Christensen, Scott Kenneth, Li, Qi, Tombs, Thomas Nathaniel, and DeLuca, Stephan J. Tue . "Method of making a perovskite layer at high speed". United States. https://www.osti.gov/servlets/purl/1840400.
@article{osti_1840400,
title = {Method of making a perovskite layer at high speed},
author = {Christensen, Scott Kenneth and Li, Qi and Tombs, Thomas Nathaniel and DeLuca, Stephan J.},
abstractNote = {A method of making a perovskite layer includes providing a flexible substrate; providing a perovskite solution comprising an initial amount of solvent and perovskite precursor materials and a total solids concentration between 30 percent and 70 percent by weight of its saturation concentration; depositing the perovskite solution on the flexible substrate; removing a first portion of the solvent from the deposited perovskite solution and increasing the total solids concentration of the perovskite solution to at least 75 percent of its saturation concentration with a first drying step; and removing a second portion of the solvent from the deposited perovskite solution with a second drying step having a higher rate of solvent evaporation that causes saturation and a conversion reaction in the deposited perovskite solution resulting in perovskite crystal formation or formation of a perovskite intermediate phase, wherein the first drying step dwell time is at least 5 times longer than the second drying step dwell time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {8}
}

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