Refractive index database

nk database   |   n2 database   |   about




Optical constants of SnSe2 (Tin diselenide)
Ermolaev et al. 2022: thin film; n 0.300–3.30 µm, k 0.300–1.68 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true
film_thickness: 6.5e-9
substrate: SiO2
deposition_method: CVD


6.5 nm CVD SnSe2.


G. A. Ermolaev, D. I. Yakubovsky, M. A. El-Sayed, M. K. Tatmyshevskiy, A. B. Mazitov, A. A. Popkova, I. M. Antropov, V. O. Bessonov, A. S. Slavich, G. I. Tselikov, I. A. Kruglov, S. M. Novikov, A. A. Vyshnevyy, A. A. Fedyanin, A. V. Arsenin, V. S. Volkov. Broadband optical constants and nonlinear properties of SnS2 and SnSe2, Nanomaterials 12, 141 (2022) (Numerical data kindly provided by Georgy Ermolaev)


[CSV - comma separated]   [TXT - tab separated]   [Full database record]


Tin diselenide, SnSe2

Tin diselenide (SnSe2) is a layered, semiconducting material with a hexagonal crystal structure. SnSe2 belongs to the group of metal dichalcogenides, a family of two-dimensional (2D) materials similar to transition metal dichalcogenides like MoS2. As a 2D material, SnSe2 can be exfoliated into thin layers or even monolayers. Its direct bandgap and strong light-matter interaction have spurred interest in potential optoelectronic applications such as photodetectors and field-effect transistors. Additionally, due to its unique electronic and mechanical properties, SnSe2 is also investigated for potential uses in nanoelectronic devices and as a thermoelectric material.

Other name

  • Tin(IV) selenide
  • Tin selenide
  • Stannic selenide
  • Bis(selanylidene)tin

External links