Precursor of inorganic/organic hybrid perovskite compound

Patent metadata

Field	Value
Publication number	US-2016322591-A1
Application number	US-201415102403-A
Country	US
Kind code	A1
Filing date	Dec 23, 2014
Priority date	Dec 23, 2013
Publication date	Nov 3, 2016
Grant date	—

Abstract

Provided is a precursor of an inorganic/organic hybrid perovskite compound, and the precursor of the precursor of the inorganic/organic hybrid perovskite compound according to an exemplary embodiment of the present invention includes an organic positive ion, a metal positive ion, a halogen negative ion, and a guest molecule (GM).

First claim

1 . A precursor of an inorganic/organic hybrid perovskite compound comprising an organic cation, a metal cation, a halogen anion, and a guest molecule (GM).

2 . The precursor of claim 1 , wherein in X-ray diffraction measurement of the precursor using a Cu-Kα ray, diffraction peaks at diffraction angles (2θ) of 6.2 to 6.8°, 7 to 7.5°, and 8.9 to 9.5° are detected.

3 . The precursor of claim 1 , wherein the guest molecule is a solvent dissolving the inorganic/organic hybrid perovskite compound.

4 . The precursor of claim 3 , wherein it is a solvate of the inorganic/organic hybrid perovskite compound and the solvent.

5 . The precursor of claim 3 , wherein the guest molecule is a solvent containing one or more elements selected from the group consisting of oxygen, nitrogen, fluorine, chlorine, bromine and iodine.

6 . The precursor of claim 3 , wherein the guest molecule is one or two or more selected from the group consisting of N,N-dimethylacetamid, 1,4-dioxane, diethylamine, ethylacetate, tetrahydrofuran, pyridine, methanol, ethanol, dichlorobenzene, glycerin, dimethyl sulfoxide (DMSO) and N,N-dimethylformamide (DMF).

7 . The precursor of claim 3 , wherein it satisfies following Chemical Formula 1:
AM ( GM ) n X 3   [Chemical Formula 1]
wherein A is an organic ammonium ion, an amidinium group ion, or an organic ammonium ion and an amidinium group ion; M is a divalent metal ion; X is a halogen ion; and n is a real number of 0<n<3.

8 . The precursor of claim 7 , wherein in Chemical Formula 1, X is X a (1-y) X b y , in which X a and X b are different halogen ions from each other, selected from the group consisting of an iodide ion (I − ), a chloride ion (Cl − ) and a bromide ion (Br − ), and y is a real number of 0<y<1.

9 . The precursor of claim 1 , wherein it is for a light absorber of a solar cell.

10 . A dispersion comprising the precursor of claim 1 .

11 . A method of manufacturing a light absorber of a solar cell using the precursor of claim 1 .

12 . The method of claim 11 , comprising:
coating or vapor depositing the precursor on a base material to form a precursor layer; and applying energy on the precursor layer to volatilize and remove guest molecules.

Assignees

• Korea Res Inst Chemical Tech

Inventors

• Seok Sang Il
• Noh Jun Hong
• Jeon Nam Joong

Classifications

• H10K85/50

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

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• H10K71/15

  characterised by the solvent used · CPC title

• C07F7/24 Primary

  Lead compounds · CPC title

• H10F77/12

  Active materials · CPC title