Thulium phosphide

Thulium phosphide is an inorganic compound of thulium and phosphorus with the chemical formula TmP.^[1][2]

Thulium phosphide

Names
Other names Phosphanylidynethulium
Identifiers
CAS Number	12037-68-2
3D model (JSmol)	Interactive image
EC Number	234-863-1
PubChem CID	82857
CompTox Dashboard (EPA)	DTXSID301313489
InChI InChI=1S/P.Tm Key: XSKLKLHDOPCDAC-UHFFFAOYSA-N
SMILES P#[Tm]
Properties
Chemical formula	PTm
Molar mass	199.90
Appearance	Crystals
Density	7.62 g/cm3
Structure
Crystal structure	Cubic
Related compounds
Other anions	Thulium nitride Thulium arsenide Thulium antimonide Thulium bismuthide
Other cations	Erbium phosphide Ytterbium phosphide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

Reaction of thulium metal with phosphorus:

4 Tm + P₄ → 4 TmP

Physical properties

The dense phosphide film will prevent further reactions inside the metal. After etching gallium arsenide, an epitaxial layer of thulium phosphide can be grown on the surface to obtain a TmP/GaAs heterostructure.^[3][4]

The compound forms crystals of a cubic system, space group Fm3m.^[5] TmP crystallizes in a NaCl-type structure at ambient pressure.^[6]

Uses

The compound is a semiconductor used in high power, high frequency applications and in laser and other photo diodes.^{[dubious – discuss][1]}