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

Area of Science:

• Materials Science
• Optoelectronics
• Nanotechnology

Background:

• Room-temperature lasing is crucial for miniaturized optoelectronic and photonic devices.
• Developing stable and efficient lasing materials at room temperature remains a significant challenge.

Purpose of the Study:

• To synthesize phase-pure quasi-2D tin perovskite nanowires with controlled quantum well thicknesses.
• To enable efficient room-temperature lasing in the near-infrared spectrum.
• To demonstrate the potential for photonic applications through nanolaser fabrication.

Main Methods:

• Synthesized quasi-2D layered tin perovskite nanowires (n=1-4) using a novel organic spacer.
• Incorporated molecular intercalants for controlled crystallization into Fabry-Pérot cavities.
• Utilized optical pumping to achieve lasing and characterized cavity performance.

Main Results:

• Achieved efficient and robust near-infrared, room-temperature optically pumped lasing for n=2-4 perovskites.
• Demonstrated a low lasing threshold of 75.8 μJ/cm² and a cavity quality factor exceeding 3000.
• Observed negligible degradation over 10⁶ pulses, indicating high material stability.
• Fabricated a cleaved coupled nanolaser as a proof-of-concept.

Conclusions:

• The developed tin perovskite nanowires are promising for efficient room-temperature lasing applications.
• The incorporation of specific organic spacers and intercalants enhances crystal growth and lattice rigidity.
• These findings pave the way for advanced miniaturized photonic devices and integrated nanolasers.