Solar cell and solar cell manufacturing method

A solar cell, comprising:

• an electrode;
• a counter electrode;
• and
• a photoelectric conversion layer between the electrode and the counter electrode,
• the photoelectric conversion layer containing an organic-inorganic perovskite compound represented by the formula R-M-X3 where R is an organic molecule, M is a metal atom, and X is a halogen atom or a chalcogen atom,
• the organic-inorganic perovskite compound being an crystalline semiconductor having a degree of crystallinity of 70% or higher,
• the photoelectric conversion layer having a part containing at least one element selected from the group consisting of an element of group 2 of the periodic table, an element of group 11 of the periodic table, manganese, antimony, titanium, neodymium, iridium, and lanthanum.

A solar cell, comprising:

• an electrode;
• a counter electrode;
• and
• a photoelectric conversion layer between the electrode and the counter electrode,
• the photoelectric conversion layer containing an organic-inorganic perovskite compound represented by the formula R-M-X3 where R is an organic molecule, M is a metal atom, and X is a halogen atom or a chalcogen atom,
• the organic-inorganic perovskite compound being a reaction product of a metal halide compound and an amine compound,
• the photoelectric conversion layer having a residual amine compound content of 0.5 mol or less relative to 1 mol of the organic-inorganic perovskite compound.

A method of producing a solar cell comprising an electrode, a counter electrode, and a photoelectric conversion layer between the electrode and the counter electrode, the photoelectric conversion layer containing an organic-inorganic perovskite compound represented by the formula R-M-X3 where R is an organic molecule, M is a metal atom, and X is a halogen atom or a chalcogen atom,

• the method comprising the steps of:
• forming a photoelectric conversion layer containing an organic-inorganic perovskite compound by a printing method using a solution containing a metal halide compound and a solution containing an amine compound;
• and
• heating the photoelectric conversion layer under conditions of a heating temperature of 100° C. or higher but lower than 200° C. and a heating time of three minutes or longer but within two hours,
• the method including incorporating, into one or both of the solution containing a metal halide compound and the solution containing an amine compound, at least one element selected from the group consisting of an element of group 2 of the periodic table, an element of group 11 of the periodic table, manganese, antimony, titanium, neodymium, iridium, and lanthanum.

A method of producing a solar cell comprising an electrode, a counter electrode, and a photoelectric conversion layer between the electrode and the counter electrode, the photoelectric conversion layer containing an organic-inorganic perovskite compound represented by the formula R-M-X3 where R is an organic molecule, M is a metal atom, and X is a halogen atom or a chalcogen atom,

• the method comprising the steps of:
• forming a photoelectric conversion layer containing an organic-inorganic perovskite compound by a printing method using a solution containing a metal halide compound and a solution containing an amine compound;
• and
• immersing the photoelectric conversion layer into a solvent that does not dissolve the organic-inorganic perovskite compound but dissolves the amine compound.