Emissive perovskite quantum wires in robust nanocontainers

TL;DR

This paper reports the synthesis of high aspect ratio, color-tunable, polarized perovskite quantum wires encapsulated in boron nitride nanotubes, offering enhanced stability and potential for nanoscale photonic applications.

Contribution

It introduces a novel method to create robust, encapsulated perovskite quantum wires with tunable properties using boron nitride nanotubes as nanocontainers.

Findings

High aspect ratio perovskite quantum wires synthesized within BNNTs.

Encapsulation enhances stability and mitigates degradation.

Wires exhibit color-tunable, highly polarized emission.

Abstract

Light emissive nanostructures were prepared from boron nitride nanotubes (BNNTs) filled with inorganic lead halide perovskites. These one-dimensional nanocontainers provide a platform for facile synthesis of high aspect ratio perovskite quantum wires having color-tunable, highly polarized emission. BNNTs form a flexible and robust protective shell around individual nanowires, that mitigates degradation during post-processing for practical applications, while allowing to exploit the emission of the perovskite nanowires. The wire diameter can be tuned by choosing appropriate BNNT hosts, giving easy access to well-defined nanowires across the strongly quantum-confined diameter range. The individual encapsulated quantum wires can be used as building blocks for nanoscale photonic devices, and to create large-scale flexible assemblies.