Bio-based graphene in transparent conductive films – step 1

In this study, the focus will be on using graphene made from biomass in a transparent conductive film used to make different layers of direct plasmonic solar cells.  Today Indium tin oxide (ITO) is the most widely used material for transparent conductive oxides (TCOs) films, making it an industry standard. However, Indium is a rare earth metal. Other TCOs, such as aluminum-doped zinc oxide (AZO) and fluorinated tin oxide (FTO), have been proposed, but all suffer from relatively high-temperature processing and low flexibility.  There are also polymer-based materials that provide transparency, low-temperature processing, and flexibility but they are often made from toxic and harmful chemicals.

The project goal is to use Bright Day Graphene’s Green Graphene as an environmentally friendly alternative for the replacement of the metals and polymers that are currently the industry standard for the Transparent Conductive Films (TCFs). While this project focuses on one application area of the solar cell, TCFs find its applicability in many other areas like printed flexible displays, printed organic solar cells, flexible batteries, sensor arrays, and radio frequency identification tags (RFID). The TCFs application in the printed electronics market has witnessed a rapid rise and is estimated to reach USD 13.6 billion by 2023, from USD 6.8 billion in 2018. This feasibility study’s successful completion will open many new application areas for the sustainable graphene-based ink in optoelectronics.


Bright Day Graphene AB and Peafowl Solar Power AB.

Budget & time plan

The project’s total budget is 600 000 SEK and the project runs during six months – between May and October 2021.