Control of CH3NH3PbI3Perovskite Nanostructure Formation through the Use of Silicon Nanotube Templates

Roberto Gonzalez-Rodriguez, Neta Arad-Vosk, Naama Rozenfeld, Amir Sa'ar, Jeffery L. Coffer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The formation of methylammonium lead iodide (CH3NH3PbI3) nanostructures inside porous silicon nanotubes with a wall thickness of 10 nm and possessing inner diameters of either 70 or 200 nm were reported. SiNTs are fabricated by a sacrificial template method involves the initial formation of ZnO NW array templates on substrates such as silicon wafers or FTO glass. The substrates were previously treated with ZnO nanocrystal seeds. ZnO NWs growth is achieved by exposing the ZnO seed-coated substrate to a mixture of 0.02 M Zn(NO3) 2 and 0.02 M hexametylenetetramine for 9 h in order to produce ZnO nanowires 70 nm in diameter. The PL and the absorption spectra of perovskite-loaded SiNTs show unique characteristics, which can be assigned to the size and the dimensionality of the CH3NH3PbI3 nanorods, most notably the effect of the stress at the perovskite-silicon interface of these nanostructures that are characterized by a large surface-to-volume ratio.

Original languageAmerican English
Pages (from-to)4477-4480
Number of pages4
JournalSmall
DOIs
StatePublished - 2016

Bibliographical note

Funding Information:
Financial support by the Robert A. Welch Foundation (J.L.C., Grant P-1212) is gratefully acknowledged.

Keywords

  • fluorescence
  • perovskite nanostructures
  • photonics
  • silicon nanotubes
  • templates

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