Long‐Lived Photoluminescence of Photostable One‐Dimensional Picoperovskites

Small Science 2026 Open access

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Authors: Maximilian Tomoscheit, Julian Schröer, Jaskaran Singh Virdee, Steffen Wolter, Rico Schwartz, Stefan Lochbrunner, Christopher E. Patrick, Reza J. Kashtiban, Tobias Korn
DOI: 10.1002/smsc.202500427
Cited by: 1
References: 39

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 redshifted 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.

Fields of Study & Subjects

Perovskite Materials and Applications Thermal Expansion and Ionic Conductivity Advanced Battery Materials and Technologies

Publication details

Journal / source
Small Science
Publisher
Wiley
Volume
6
Issue
2
Pages
e202500427–e202500427
Publication date
1 February 2026
Language
EN