Perovskite hybrid solar cells

US10340458B2 · kind B2 · utility

Assignee

• THE UNIVERSITY OF AKRON · US

Inventors

• Xiong Gong · Goleta, US
• Chang Liu · Akron, US
• Kai Wang · Lo Wu, CN

Key dates

• Filing date: Oct 31, 2016
• Grant date: Jul 2, 2019
• Expiry date: Dec 22, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549

Abstract

Perovskite hybrid solar cells utilize a bulk heterojunction (BHJ) active layer that is formed as a composite of an organometal halide perovskite and a water soluble fullerene, such as A10C60. In alternative embodiments, the BHJ active layer may be formed as a composite of an organometal halide perovskite material and a fullerene, such as PC61BM. Thus, the fullerene acts as an electron extraction acceptor within the BHJ, allowing such solar cells to more efficiently transport the electrons from the fullerene/perovskite interface to a fullerene-based electron transport layer (ETL). As a result, increased fill factor (FF), as well as improvements in the short-circuit current density (JSC) and power conversion efficiency (PCE) are achieved by the solar cells.