Developed by researchers from UNIST Graduate School of Carbon Neutrality, in collaboration with Gyeongsang National University (GNU), the PSC replaces the conventional additive 4-tert-butylpyridine (tBP) with ethylene carbonate (EC) in the composition of the PSCs.
High efficiency
Researchers also revealed that while tBP improves efficiency, it significantly lowers the glass transition temperature (Tg) of the hole transport layer to below 80°C, compromising the stability of the cell in high-temperature environments. Reports highlighted that the The glass transition represents the point at which the hole transport layer becomes nearly liquid.