Ultralong CH3NH3PbI3 nanowires synthesized by a ligand-assisted reprecipitation strategy for high-performance photodetectors. Issue 22 (5th May 2020)

• Record Type: Journal Article
• Authors: He, Xu; Jian, Chuanyong; Hong, Wenting; Cai, Qian; Liu, Wei
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 22(2020)
• Page Start: 7378
• Page End: 7383
• Publication Date: 2020-05-05
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0tc00807a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Organic–inorganic hybrid perovskite nanowires with well-defined structures have attracted considerable attention for optoelectronic applications. Abstract : Organic–inorganic hybrid perovskite nanowires with well-defined structures have attracted considerable attention for optoelectronic applications. Perovskite nanowires integrated into practical optoelectronic devices are often hindered by the poor crystalline quality. Herein, a ligand-assisted reprecipitation (LARP) strategy is employed to prepare ultralong and freestanding CH3 NH3 PbI3 nanowires on a large-scale. Oleylamine is adopted as an inhibitor, which can create a passivation layer on the surface of CH3 NH3 PbI3, to slow down the crystallization rate of CH3 NH3 PbI3 nanowires. With the low crystallization rate, several millimeters long and high-quality CH3 NH3 PbI3 nanowires with smooth surfaces can be synthesized on a large scale. Photodetectors fabricated on oleylamine assisted synthesized CH3 NH3 PbI3 nanowires exhibit high detectivity, which is five times higher than that of non-oleylamine assisted synthesized CH3 NH3 PbI3 nanowire photoanodes.