Solar cell
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorShohei Kusumoto
Life of this patent
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Abstract
Provided is a solar cell comprising a first electrode, a second electrode, a light-absorbing layer located between the first electrode and the second electrode, and an electron transport layer located between the first electrode and the light-absorbing layer. At least one electrode selected from the group consisting of the first electrode and the second electrode has light-transmissive property. The light-absorbing layer contains a perovskite compound represented by a chemical formula ASnX3 (where A is a monovalent cation and X is a halogen anion). The electron transport layer contains an electron transport material including Ti and Zn. A difference between energy levels of lower ends of conduction bands of the electron transport material and the perovskite compound is less than 0.42 eV.
Claims6
A solar cell, comprising:
- a first electrode;
- a second electrode;
- a light-absorbing layer located between the first electrode and the second electrode;
- and
- an electron transport layer located between the first electrode and the light-absorbing layer, wherein:
- at least one electrode selected from the group consisting of the first electrode and the second electrode has light-transmissive property,
- the light-absorbing layer contains a perovskite compound represented by a chemical formula FA1−yPEAySnI3, where FA denotes a formamidinium cation, PEA denotes a phenethylammonium cation, and 0<y<1,
- the electron transport layer contains an electron transport material including Ti and Zn, and the electron transport material is formed of an oxide represented by the chemical formula TixZn1−xO1+x, where 0<x<1, and
- a difference between an energy level of a lower end of conduction band of the electron transport material and an energy level of a lower end of conduction band of the perovskite compound is less than 0.42 eV.
Dependencies are inferred from the claim text.