Patent ID: 11964877
Assignee: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 2:
3. The method of claim 2, further comprising:
before the second step,
a step of preparing the dispersion fluid,
wherein the step of preparing the dispersion fluid includes:
preparing a perovskite precursor solution containing a first compound satisfying a following Chemical Formula 1, a second compound satisfying a following Chemical Formula 2, and the polar aprotic solvent; and
mixing the organic ligand with the perovskite precursor solution,

AX  [Chemical Formula 1]

wherein A is Cs+ or an organic cation and X is Br−, Cl−, or I−,

BX2  [Chemical Formula 2]

wherein B is Pb2+, Sn2+, Bi2+, Sb2+, Mn2+, or Cu2+ and X is Br−, Cl−, or I−.