Rapid Microwave-Annealing Process of Hybrid Perovskites to Eliminate Miscellaneous Phase for High Performance Photovoltaics.

ABSTRACT: Rapid processing technologies of perovskite solar cells (PSCs) offer an exciting approach to raise the rate of production. Herein, a rapid microwave-annealing process (MAP) is reported to replace the traditional hotplate annealing process (HAP) and the processing period of perovskite is reduced to less than 1 min. Benefiting from the penetrability and simultaneity of microwave irradiation, the MAP method can effectively eliminate miscellaneous phases and thus achieve >1 µm large-size crystal grains in perovskite films. These MAP treated perovskite films exhibit pure crystalline phase, long charge-carrier lifetime, and low defect density, which can substantially improve the PSC efficiency without requiring an additional enhancer/passivation layer. The inverted planar PSCs present enhanced p

SUBMITTER: Chen Q 

PROVIDER: S-EPMC7312440 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature