Long-lived Photoluminescence of Photostable One-dimensional Picoperovskites

2025/07/22 by Maximilian Tomoscheit, Tomoscheit, Maximilian, Julian Schröer +11 · 1 citation
Engineering · Materials Science · Energy · #Perovskite Materials and Applications #Conducting polymers and applications #Advanced Photocatalysis Techniques

paper · pdf · doi:10.48550/arxiv.2507.16352

Abstract

We study one-dimensional metal halide perovskite crystals encapsulated in single-wall nanotubes, so-called picoperovskites, using optical spectroscopy. Polarized micro-photoluminescence (PL) reveals bright emission from aligned bundles of picoperovskites with clear linear polarization along the bundle axis. This emission is red-shifted with respect to bulk perovskite samples using the same constituents. Temperature-dependent, time-resolved micro-PL shows extraordinarily long PL lifetimes of the picoperovskites at low temperatures, reaching several hundred nanoseconds and exceeding those of bulk perovskites by two orders of magnitude.

Citations

• Electronic structure of (organic-)inorganic metal halide perovskites:\n the dilemma of choosing the right functional
• QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials

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