Electron transport layer for perovskite solar cell and perovskite solar cell including same

Abstract

The present disclosure relates to an electron transport layer for a perovskite solar cell, which is tin oxide (SnO2-x, 0<x<1) comprising oxygen vacancies, wherein the oxygen vacancies are passivated by oxidized black phosphorus quantum dots (O-BPs), and a perovskite solar cell including the same. The electron transport layer for a perovskite solar cell of the present disclosure can prevent phase transition to a structure having semiconductor properties not suitable for solar cells, such as δ-FAPbI3 or PbI2, due to the occurrence of iodine interstitials (Ii) in the perovskite structure caused by deficiency of oxygen atoms in SnO2-x at the interface, by passivating the oxygen vacancies with oxidized black phosphorus quantum dots (O-BPs) containing multiple P═O bonds.

Dependencies are inferred from the claim text.