For the commercialization of organic solar cells (OSCs), fabricating large-area modules using a solution process is crucial. A major challenge when using nonfullerene acceptor (NFA)-based photoactive layers is the energetic mismatch and carrier recombination, which lowers the built-in potential. In response, researchers have developed hybrid hole transport layers (h-HTLs) incorporating WO3 and MoO3, allowing better control over energy levels due to the high bond energies and electronegativities of W and Mo atoms. These h-HTLs show excellent conductivity and film formation properties, enabling the production of large-area OSC modules with over 30 cm² active area and 8.1% power conversion efficiency (PCE). Additionally, a semitransparent module with 7.2% PCE and 22.3% visible transmittance demonstrates potential for various industrial applications.-Scientific Journal cover design by scapiens
[Scientific Journal cover design] Low-Thermal-Budget Fluorite-Structure Ferroelectrics for Future Electronic Device Applications
In article number 2100028, Jiyoung Kim, Si Joon Kim, and their team review key factors involved in developing fluorite-structure ferroelectrics
