Figure 2. (IMAGE) Kanazawa University Caption J-V curves of PSCs with FTO-A, FTO-B, FTO-AB, and FTO-BA as the ETL. Inset images: STEM image of brookite TiO2 NPs, brookite dispersion and crystallographic structure of brookite TiO2 with highlighted TiO6 polyhedral (blue and red atoms represent titanium and oxygen, respectively). Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. 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.