➀ SoFab Inks introduces a new high-performance, low-cost ETL for perovskite solar cells; ➁ The product is a functionalized nanoparticle ink with dopant-tunable properties; ➂ It offers benefits like low-temperature solution processability, high chemical stability, and robust electron conductivity; ➃ The company reports a PCE of over 20% in inverted perovskite solar cells using a plastic substrate; ➄ The ETL is expected to be cheaper than C60 and improve cell durability.