title: Perovskite solar cells with 12.8% efficiency by using conjugated quinolizino acridine based hole transporting material.
abstract: A low band gap quinolizino acridine based molecule was designed and synthesized as new hole transporting material for organic-inorganic hybrid lead halide perovskite solar cells. The functionalized quinolizino acridine compound showed an effective hole mobility in the same range of the state-of-the-art spiro-MeOTAD and an appropriate oxidation potential of 5.23 eV vs the vacuum level. The device based on this new hole transporting material achieved high power conversion efficiency of 12.8% under the illumination of 98.8 mW cm(-2), which was better than the well-known spiro-MeOTAD under the same conditions. Moreover, this molecule could work alone without any additives, thus making it to be a promising candidate for solid-state photovoltaic application.
authors.affiliation: Laboratory of Photonics and Interfaces, Department of Chemistry and Chemical Engineering, Swiss Federal Institute of Technology , Station 6, CH-1015 Lausanne, Switzerland.
authors.forename: Peng
authors.initials: P
authors.lastname: Qin
authors.forename: Sanghyun
authors.initials: S
authors.lastname: Paek
authors.forename: M Ibrahim
authors.initials: MI
authors.lastname: Dar
authors.forename: Norman
authors.initials: N
authors.lastname: Pellet
authors.forename: Jaejung
authors.initials: J
authors.lastname: Ko
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
authors.forename: Mohammad Khaja
authors.initials: MK
authors.lastname: Nazeeruddin