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Charge transfer between lead halide perovskite nanocrystals and single-walled carbon nanotubes

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Abstract

A charge transfer study between lead halide-based perovskite nanocrystals and single-walled carbon nanotubes (PNC@CNT nanocomposite) was performed. Solution-processed MAPbX3 PNCs displayed very bright luminescence, but it quenched in the presence of CNTs. This was attributed to the electron transfer from PNCs to CNTs. The detailed changes in fluorescence lifetime were investigated through time-correlated single-photon counting (TCSPC), which suggested mixed static and dynamic quenching along with a decrease in the lifetime. Morphological changes were investigated via transmission electron microscopy (TEM) and attributed to the incorporation of PNCs on long CNTs. Also, the PNC@CNT nanocomposite was explored for photoinduced current response, which indicated an ∼3 fold increase in photoconductivity under light illumination (with a 1 mV bias). This electron transfer study between PNCs and CNTs contributes to the exploration of charge dynamics.

Graphical abstract: Charge transfer between lead halide perovskite nanocrystals and single-walled carbon nanotubes

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Supplementary files

Article information


Submitted
07 Dec 2019
Accepted
02 Jan 2020
First published
02 Jan 2020

This article is Open Access

Nanoscale Adv., 2020, Advance Article
Article type
Paper

Charge transfer between lead halide perovskite nanocrystals and single-walled carbon nanotubes

P. Bansal, X. Zhang, H. Wang, P. Kar and W. W. Yu, Nanoscale Adv., 2020, Advance Article , DOI: 10.1039/C9NA00766K

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