Antimony triselenide is the chemical compound with the formula Sb2Se3 which crystallizes in an orthorhombic space group. Sb2Se3 shares striking structural and physical similarities with topological insulator Sb2Te3. Recently, Sb2Se3 has been predicted possess topological insulator state[1-3], superconductivity [4], and high thermoelectric efficiency. Sb2Se3 crystals measure ~1cm in size, rated at 99.9998% purity, and exhibit strong and sharp Raman signal, ideal environmental stability, and high crystalline order. Crystals are synthesized through flux  zone technique to high high crystallinity and enable exfoliation.

Overall characteristics

Topological insulator
High electron mobility semiconductor
2D anisotropic semiconductor
Thermoelectric material
Superconductivity

References

[1] The rhombohedral Sb2Se3 is also an intrinsic topological insulator; arXiv:1607.05911v2

[2] Induced robust topological order on an ordinary insulator hetero-structured with a strong topological insulator; arXiv:1611.04688

[3] Exotic Topological Insulator States and Topological Phase Transitions in Sb2Se3–Bi2Se3 Heterostructures ACS Nano, 2012, 6 (3), pp 2345–2352

[4] Superconductivity in Strong Spin Orbital Coupling Compound Sb2Se3; Scientific Reports volume 4, Article number: 6679 (2014)

[5] Thermal and Thermoelectric Transport in Highly Resistive Single Sb2Se3 Nanowires and Nanowire Bundles; https://www.nature.com/articles/srep35086