TiSe2 (1T phase Titanium Diselenide)
TiSe2 (1T phase) is a semimetal. The 1T phase is a Charge density waves (CDW) system below ~200K. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Titanium Diselenide belongs to the group-IV transition metal dichalcogenides (TMDC).
To buy TiSe2 crystals please click here.
The TiSe2 crystals produced at HQ Graphene have a typical lateral size of ~0.8 cm, hexagonal shaped and have a metallic appearance.
More information about the TiSe2 crystals we sell can be found below.
| Crystal size | ~8 mm |
| Electrical properties | Semimetal. Charge density waves (CDW) below ~200K) |
| Crystal structure | Hexagonal |
| Unit cell parameters | a = b = 0.354 nm, c = 0.601 nm, α = β = 90°, γ = 120° |
| Monolayer properties |  Link to C2DB containing calculated properties |
| Type | Synthetic |
| Purity | >99.995 % |
| Characterized by | XRD, Raman, EDX |
| More information? | Please contact us by email or phone |
The single crystal TiSe2 is characterized using:
XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)EDX: Stoichiometric analysis
Raman: 785nm Raman system
Raman, XRD and EDX on TiSe2:
Click on an image to zoom
HQ Graphene Wiki on:
TiSe2 (Titanium Diselenide)
1. Saqib, H., et al. "Evolution of structural and electronic properties of TiSe2 under high pressure." The Journal of Physical Chemistry Letters 12.40 (2021): 9859-9867.
2. Otto, M.R., et al. "Mechanisms of electron-phonon coupling unraveled in momentum and time: The case of soft phonons in TiSe2." Science Advances 7.20 (2021): eabf2810.
3. Prando, G., Piatti, E., Daghero, D., Gonnelli, R. S., & Carretta, P. (2023). Cluster charge-density-wave glass in hydrogen-intercalated TiSe 2. Physical Review Materials, 7(9), 094002.
4. Cha, S., et al. "Order-disorder phase transition driven by interlayer sliding in lead iodides." Nature communications 14.1 (2023): 1981.