A Sn-Based Hybrid Ferroelastic Semiconductor with High-Temperature Dielectric Switching

Area of Science:

• Materials Science
• Solid-State Chemistry
• Crystallography

Background:

• Organic-inorganic halide hybrids are vital in optoelectronics due to their tunable structures and properties.
• Ferroelastic strain offers a pathway to modulate photoelectric properties, but organic-inorganic hybrid ferroelastic semiconductors are underexplored.

Purpose of the Study:

• To design and investigate a novel lead-free organic-inorganic halide hybrid ferroelastic semiconductor.
• To explore the ferroelastic and dielectric switching properties of the new material.

Main Methods:

• Synthesis of a new Sn-based lead-free hybrid ferroelastic semiconductor, [TPMA]2[SnCl6].
• Characterization of its ferroelastic phase transition using temperature and stress stimuli.
• Investigation of dielectric switching properties around the transition temperature.

Main Results:

• A new Sn-based, lead-free hybrid ferroelastic semiconductor, [TPMA]2[SnCl6], was successfully synthesized.
• The material exhibits a high-temperature ferroelastic phase transition at 408 K, with switchable domains under heat and stress.
• Demonstrated high-temperature dielectric switching with good stability and reproducibility.

Conclusions:

• [TPMA]2[SnCl6] is a promising lead-free hybrid ferroelastic semiconductor with switchable ferroelastic domains and dielectric properties.
• The material's unique characteristics suggest potential applications in energy storage, optoelectronics, and intelligent switches.