Hydrogenated TiO₂ Thin Film for Accelerating Electron Transport in Highly Efficient Planar Perovskite Solar Cells.

ABSTRACT: Intensive studies on low-temperature deposited electron transport materials have been performed to improve the efficiency of n-i-p type planar perovskite solar cells to extend their application on plastic and multijunction device architectures. Here, a TiO₂ film with enhanced conductivity and tailored band edge is prepared by magnetron sputtering at room temperature by hydrogen doping (HTO), which accelerates the electron extraction from perovskite photoabsorber and reduces charge transfer resistance, resulting in an improved short circuit current density and fill factor. The HTO film with upward shifted Fermi level guarantees a smaller loss on V_OC and facilitates the growth of high-quality absorber with much larger grains and more uniform size, leading to devi

SUBMITTER: Yao X 

PROVIDER: S-EPMC5644234 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature