Antimony triselenide explained

Antimony triselenide is the chemical compound with the formula . The material exists as the sulfosalt mineral antimonselite (IMA symbol: Atm[1]), which crystallizes in an orthorhombic space group.[2] In this compound, antimony has a formal oxidation state +3 and selenium -2. The bonding in this compound has covalent character as evidenced by the black color and semiconducting properties of this and related materials.[3] The low-frequency dielectric constant (ε0) has been measured to be 133 along the c axis of the crystal at room temperature, which is unusually large.[4] Its band gap is 1.18 eV at room temperature.[5]

The compound may be formed by the reaction of antimony with selenium and has a melting point of 885 K.

Applications

is now being actively explored for application thin-film solar cells.[6] A record light-to-electricity conversion efficiency of 9.2% has been reported.[7]

Notes and References

  1. Warr. L.N.. 2021. IMA-CNMNC approved mineral symbols. Mineralogical Magazine. 85. 3 . 291–320. 10.1180/mgm.2021.43 . 2021MinM...85..291W . 235729616 . free.
  2. Jambor, J. L.; Grew, E. S."New Mineral Names" American Mineralogist, Volume 79, pages 387-391, 1994.
  3. Book: Madelung . O . Semiconductors: data handbook . Springer . 9783540404880 . 3rd. 2004 .
  4. Petzelt. J.. Grigas. J.. January 1973. Far infrared dielectric dispersion in Sb2S3, Bi2S3 and Sb2Se3 single crystals. Ferroelectrics. 5. 1. 59–68. 10.1080/00150197308235780. 1973Fer.....5...59P . 0015-0193.
  5. Birkett . Max . Linhart . Wojciech M. . Stoner . Jessica . Phillips . Laurie J. . Durose . Ken . Alaria . Jonathan . Major . Jonathan D. . Kudrawiec . Robert . Veal . Tim D. . Band gap temperature-dependence of close-space sublimation grown Sb2Se3 by photo-reflectance . APL Materials . 2018 . 6 . 8 . 084901 . 10.1063/1.5027157 . free .
  6. Bosio . Alessio . Foti . Gianluca . Pasini . Stefano . Spoltore . Donato . A Review on the Fundamental Properties of Sb2Se3-Based Thin Film Solar Cells . Energies . January 2023 . 16 . 19 . 6862 . 10.3390/en16196862. free .
  7. Wong . Lydia Helena . Zakutayev . Andriy . Major . Jonathan Douglas . Hao . Xiaojing . Xiaojing Hao . Walsh . Aron . Todorov . Teodor K. . Saucedo . Edgardo . 2019 . Emerging inorganic solar cell efficiency tables (Version 1) . J Phys Energy . 1 . 3 . 032001 . 2019JPEn....1c2001W . 10.1088/2515-7655/ab2338 . free . free . 10044/1/70500.

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