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Controlled growth of CH3NH3PbI3 nanowires in arrays of open nanofluidic channels.

ABSTRACT: Spatial positioning of nanocrystal building blocks on a solid surface is a prerequisite for assembling individual nanoparticles into functional devices. Here, we report on the graphoepitaxial liquid-solid growth of nanowires of the photovoltaic compound CH3NH3PbI3 in open nanofluidic channels. The guided growth, visualized in real-time with a simple optical microscope, undergoes through a metastable solvatomorph formation in polar aprotic solvents. The presently discovered crystallization leads to the fabrication of mm(2)-sized surfaces composed of perovskite nanowires having controlled sizes, cross-sectional shapes, aspect ratios and orientation which have not been achieved thus far by other deposition methods. The automation of this general strategy paves the way towards fabrication of wafer-scale perovskite nanowire thin films well-suited for various optoelectronic devices, e.g. solar cells, lasers, light-emitting diodes and photodetectors.

SUBMITTER: Spina M

PROVIDER: S-EPMC4726236 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature

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Controlled growth of CH3NH3PbI3 nanowires in arrays of open nanofluidic channels.

Spina Massimo M Bonvin Eric E Sienkiewicz Andrzej A Náfrádi Bálint B Forró László L Horváth Endre E

Scientific reports 20160125

Spatial positioning of nanocrystal building blocks on a solid surface is a prerequisite for assembling individual nanoparticles into functional devices. Here, we report on the graphoepitaxial liquid-solid growth of nanowires of the photovoltaic compound CH3NH3PbI3 in open nanofluidic channels. The guided growth, visualized in real-time with a simple optical microscope, undergoes through a metastable solvatomorph formation in polar aprotic solvents. The presently discovered crystallization leads ...[more]

PMID: 26806213

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