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arXiv · 2507.16352

Long-lived Photoluminescence of Photostable One-dimensional Picoperovskites

Maximilian Tomoscheit·Julian Schröer·Jaskaran Singh Virdee·Rico Schwartz·Christopher E. Patrick·Reza J. Kashtiban·Tobias Korn
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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.

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Maximilian Tomoscheit, Julian Schröer, Jaskaran Singh Virdee, Rico Schwartz, Christopher E. Patrick, Reza J. Kashtiban, Tobias Korn. 2025-07-22. Long-lived Photoluminescence of Photostable One-dimensional Picoperovskites. https://arxiv.org/abs/2507.16352

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