Dual functional high entropy perovskite La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O3 interfacial transition layer modified Cu2Y2O5/CdIn2O4 transparent pn junction towards photovoltaic enhancement

A transparent device in perovskite HEO La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O-3 modified Cu2Y2O5/CdIn2O4 is prepared via a simple approach of sol-gel method. The Cu2Y2O5/La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O-3/CdIn2O4 exhibits high transparency of similar to 85-90 %, obvious photovoltaic conversion efficiency enhancement of similar to 2.5 x 10(3)-folds (PCE of similar to 1.12 %), and stable output in 5-months. This is mainly attributed to the La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O-3 modification, as well as the appropriate Fermi level and high quantum yield. In this system, the La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O-3 solid solution, with extra carrier injecting/driving from synergism of mixed transition metals charge compensation and lattice distortion, can improve the carrier kinetic equilibrium for PCE-transparency balance. Additionally, it can increase p-type conductivity through the synergism of Cu vacancy/interstitial oxygen. Moreover, the inorganic perovskite HEO La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O-3 with modification stability is beneficial for the actual applications.