Graphene electrodes for electronic devices

US9293553B2 · kind B2 · utility

Assignee

• The Trustees of Columbia University in the City of New York · US

Inventors

• Marshall Cox · Brooklyn, US
• Ioannis Kymissis · New York, US
• Alon Gorodetsky · Irvine, US
• Melinda Y. Han · New York, US
• Colin Nuckolls · New York, US
• Philip Kim · Cambridge, US

Key dates

• Filing date: Mar 8, 2012
• Grant date: Mar 22, 2016
• Expiry date: Mar 8, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

A laminated graphene device is demonstrated as a cathode. In one example the devices include organic photovoltaic devices. The measured properties demonstrate work-function matching via contact doping. Devices and method shown also provide increased power conversion efficiency due to transparency. These findings indicate that flexible, light-weight all carbon devices, such as solar cells, can be constructed using graphene as the cathode material.