Thin Film (IMAGE) University of Tokyo Caption The final tin dioxide thin film grown on glass to make efficient photovoltaics. Credit © 2020 Nakao et al. Usage Restrictions © 2020 Nakao et al. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.