# Hydrogen-Bonded Organic Framework Enables Phase-Pure Layered Tin Perovskite Nanowires for Room-Temperature Lasing

## TL;DR

A new method creates tin perovskite nanowires that enable efficient room-temperature lasing with minimal energy and high durability.

## Contribution

A hydrogen-bonded organic framework enables phase-pure layered tin perovskite nanowires for robust room-temperature lasing.

## Key findings

- Nanowires with n = 2 to 4 layers achieved lasing with a threshold as low as 75.8 μJ/cm².
- Cavity quality factors exceeded 3000 with negligible degradation over 10⁶ pulses.
- A cleaved coupled nanolaser was fabricated for photonic applications.

## Abstract

Room-temperature
lasing is a key milestone in the development
of
miniaturized optoelectronic and photonic devices. We present a simple
approach to synthesize phase-pure quasi-2D layered tin perovskite
nanowires with varying quantum well thicknesses (n = 1 to 4). By incorporating a new organic spacer capable of forming
a hydrogen-bonded organic framework, this method promoted anisotropic
crystal growth and enhanced lattice rigidity. Furthermore, introducing
molecular intercalants enabled controlled crystallization into well-defined
nanowires that function as Fabry–Pérot cavities. Cavities
made from n = 2 to 4 perovskites support efficient
and robust near-infrared, room-temperature optically pumped lasing
with the threshold as low as 75.8 μJ/cm2, cavity
quality factor over 3000, and negligible degradation over 106 pulses. A cleaved coupled nanolaser was fabricated as a proof-of-concept
device for photonic applications.