Perovskite solar cell and tandem solar cell comprising same

Abstract

The present invention relates to a perovskite solar cell and a tandem solar cell comprising the same, characterized in that the perovskite solar cell comprises: a substrate; a transparent electrode; a hole transport layer; a perovskite light absorption layer, an electron transport layer; and a metal electrode, wherein the electron transport layer is a graded thin film in which a chemical binding state of elements constituting the electron transport layer gradually changes from the lower portion thereof toward the upper portion thereof.

Dependencies are inferred from the claim text.