Gallium(II) selenide

Gallium(II) selenide
Names
IUPAC name
Gallium selenide
Other names
Gallium monoselenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.523 Edit this at Wikidata
  • InChI=1S/Ga.Se checkY
    Key: QNWMNMIVDYETIG-UHFFFAOYSA-N checkY
  • InChI=1/Ga.Se/rGaSe/c1-2
    Key: QNWMNMIVDYETIG-IUSLTFDGAM
  • [Ga]=[Se]
Properties
GaSe
Molar mass 148.69 g/mol
Appearance brown solid
Density 5.03 g/cm3
Melting point 960 °C (1,760 °F; 1,230 K)
Band gap 2.1 eV (indirect)
2.6
Structure
hexagonal, hP8
P63/mmc, No. 194
Related compounds
Other anions
 Gallium(II) oxide, Gallium(II) sulfide, Gallium(II) telluride
Other cations
 Zinc(II) selenide, Germanium monoselenide, Indium monoselenide
Related compounds
 Gallium(III) selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Gallium(II) selenide (GaSe) is a chemical compound. It has a hexagonal layer structure, similar to that of GaS.[1] It is a photoconductor,[2] a second harmonic generation crystal in nonlinear optics,[3] and has been used as a far-infrared conversion material[4] at 14–31 THz and above.[5]

  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  2. ^ Richard H. Bube; Edward L. Lind (1959). "Photoconductivity of Gallium Selenide Crystals". Phys. Rev. 115 (5): 1159–1164. Bibcode:1959PhRv..115.1159B. doi:10.1103/PhysRev.115.1159.
  3. ^ J. M. Auerhammer; E. R. Eliel (1996). "Frequency doubling of mid-infrared radiation in gallium selenide". Opt. Lett. 21 (11): 773–775. Bibcode:1996OptL...21..773A. doi:10.1364/OL.21.000773. PMID 19876154.
  4. ^ N.B. Singh; D.R. Suhre; V. Balakrishna; M. Marable*; R. Meyer*; N. Fernelius; F.K. Hopkins; D. Zelmon (1998). "Far-infrared conversion materials: Gallium selenide for far-infrared conversion applications". Progress in Crystal Growth and Characterization of Materials. 37 (1): 47–102. doi:10.1016/S0960-8974(98)00013-8.
  5. ^ Kübler, C.; et al. (2005). Kobayashi, Takayoshi; Okada, Tadashi; Kobayashi, Tetsuro; et al. (eds.). Ultrabroadband detection of multi-THz field transients with GaSe electro-optic sensors (PDF). Springer Series in Chemical Physics. Vol. 79. doi:10.1007/b138761. ISBN 3-540-24110-8.