▎ 摘　　要

NOVELTY - Encapsulated perovskite solar cell, comprises back electrode layer and polymer layer. The polymer layer includes first polymer layer and second polymer layer; the first polymer layer is disposed on the back electrode layer; back electrode layer is carbon electrode having porous structure, second polymer layer is filled in the back electrode layer, and the polymer layer is formed of polymer i.e. aromatic compound (I). USE - Used as encapsulated perovskite solar cell. ADVANTAGE - The method improves the stability of the perovskite solar cell; does not need to operate under high temperature and vacuum, and has little impact on the performance of perovskite solar cells. DETAILED DESCRIPTION - Encapsulated perovskite solar cell, comprises back electrode layer and polymer layer. The polymer layer includes first polymer layer and second polymer layer; the first polymer layer is disposed on the back electrode layer; back electrode layer is carbon electrode having porous structure, second polymer layer is filled in the back electrode layer, and the polymer layer is formed of polymer i.e. aromatic compound of formula (I). X = 0-5C alkylene groups; Y = H or 1-3C alkyl group; Z = 0-5C alkylene group; and n = integer of 7 or more. An INDEPENDENT CLAIM is also included for preparing encapsulated perovskite solar cell.