title: Solution-Phase Synthesis of Cesium Lead Halide Perovskite Nanowires.
abstract: Halide perovskites have attracted much attention over the past 5 years as a promising class of materials for optoelectronic applications. However, compared to hybrid organic-inorganic perovskites, the study of their pure inorganic counterparts, like cesium lead halides (CsPbX3), lags far behind. Here, a catalyst-free, solution-phase synthesis of CsPbX3 nanowires (NWs) is reported. These NWs are single-crystalline, with uniform growth direction, and crystallize in the orthorhombic phase. Both CsPbBr3 and CsPbI3 are photoluminescence active, with composition-dependent temperature and self-trapping behavior. These NWs with a well-defined morphology could serve as an ideal platform for the investigation of fundamental properties and the development of future applications in nanoscale optoelectronic devices based on all-inorganic perovskites.
authors.affiliation: §Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
authors.forename: Dandan
authors.initials: D
authors.lastname: Zhang
authors.forename: Samuel W
authors.initials: SW
authors.lastname: Eaton
authors.forename: Yi
authors.initials: Y
authors.lastname: Yu
authors.affiliation: §Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
authors.forename: Letian
authors.initials: L
authors.lastname: Dou
authors.affiliation: §Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.|∥Kavli Energy NanoSciences Institute, Berkeley, California 94720, United States.
authors.forename: Peidong
authors.initials: P
authors.lastname: Yang