Pb₂Bi₂Se₅ (Lead Bismuth Selenide)

Pb₂Bi₂Se₅ is a layered ternary compound in the lead–bismuth–selenide homologous series, a topological insulator. Its van der Waals structure is suitable for exfoliation into thin flakes.

Growth method: Chemical vapor transport (CVT).

Sample specifications: Individual crystals measure approximately 3–4 mm, with a purity of up to 99.999% (5N), and 2–3 high-quality single-crystal pieces included in each package.

Exfoliation: Moderate — cleaves along the van der Waals planes into thin flakes.