Back Contact Perovskite Solar Cell Efficiency Improved with Breakthrough Research

Bilayer tin oxide layer boosts back contact perovskite solar cell efficiency and stability

Tokyo, Japan (SPX) Dec 18, 2025 Researchers in South Korea have demonstrated that a bilayer tin oxide electron transport layer can raise the efficiency and stability of back-contact perovskite solar cells while addressing key interfacial loss mechanisms. Back-contact perovskite solar cells place the perovskite absorber at the top of the device stack so that incoming light reaches the active layer directly, while electron

Back contact perovskite solar cell efficiency improved with breakthrough research

South Korean researchers have developed a novel bilayer tin oxide electron transport layer for improving efficiency and stability of back-contact solar cells.Researchers from the University of Seoul (UOS) and Joenbuk National University (JNU) in South Korea have developed a novel bilayer tin oxide (SnO2) electron transport layer (ETL), via a simple spin-coating method, that significantly improves efficiency and stability of back-contact perovski…

Jeonbuk National University Researchers Reveal New Interface Engineering Strategy for Efficient and Stable Back-Contact Solar Cells

Back-contact perovskite solar cells (BC-PSCs) represent a promising new alternative design to conventional solar cells, offering improved light absorption and higher power conversion efficiency. However, for addressing interfacial defects and recombination losses in BC-PSCs, advanced interface engineering techniques are required. Now, researchers have developed a novel bilayer tin oxide electron transport layer for BC-PSCs, which reduces recombi…