Method for preparing layered perovskite compound thin film with organic ammonium layers and inorganic layers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 13, 2004
Grant Date -
Sep 12, 2002
app pub date -
Apr 9, 2002
filing date -
May 15, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for preparing a layered perovskite compound thin film having a film thickness and structure controlled at a monomolecular layer and capable of combining various layered perovskite compounds at the level of a monomolecular layer. The method a superlattice structure represented by the general formula A.sub.2 MX.sub.4 where A is an organic ammonium molecule, M is a group 4 element or transition metal and X is halogen layers of organic ammonium molecule 'A' and layers of inorganic halide 'MX.sub.4 ' are alternately stacked. A monomolecular film of an organic amine hydrohalic acid salt having a long-chain alkyl group is spread out on the surface of a water solution of an inorganic halide MX.sub.2 and a methylamine hydrohalic acid salt. By leaving the monomolecular film, a layered perovskite compound monomolecular film is formed on the surface of the water solution. This layered perovskite monomolecular film is transferred and stacked onto a substrate on a one by one basis by using the Langmuir-Blodgett method.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully