Organic photovoltaic cells with enhanced photocurrent

US10468615B2 · kind B2 · utility

Assignees

• IMEC VZW · BE
• Katholieke Universiteit Leuven · BE

Inventors

• Barry Rand · Princeton, US
• Kjell Cnops · Leuven, BE

Key dates

• Filing date: Jan 22, 2016
• Grant date: Nov 5, 2019
• Expiry date: Apr 17, 2036

Classification

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

Abstract

The disclosure relates to organic photovoltaic cells comprising a heterojunction structure formed by a first organic donor layer and a first organic acceptor layer, and further comprising a second organic acceptor layer adjacent to the first organic acceptor layer and/or a second organic donor layer adjacent to the first organic donor layer. The materials of the first acceptor layer and the second acceptor layer are selected to allow exciton dissociation by charge transfer at their interface, and to simultaneously allow exciton energy transfer at their interface. The materials of the first donor layer and the second donor layer are selected to allow exciton dissociation by charge transfer at their interface, and to simultaneously allow exciton energy transfer at their interface. Organic photovoltaic cells of the present invention may have a high short-circuit current density, a good open-circuit voltage and a good fill factor.