SnSe₂ (Tin diselenide)

2D materials

1 dataset, together covering 0.3–3.3 µm. Default: Ermolaev et al. 2022: thin film; n 0.300–3.30 µm, k 0.300–1.68 µm.

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Tick datasets in the list to add them to the plot (up to 12).

Datasets

Ermolaev et al. 2022: thin film; n 0.300–3.30 µm, k 0.300–1.68 µm n,k 0.3–3.3 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# SnSe2 (Tin diselenide): Ermolaev et al. 2022: thin film; n 0.300–3.30 µm, k 0.300–1.68 µm
snse2 = ls.fetch_refractiveindex("main", "SnSe2", "Ermolaev", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(snse2.range_nm)  # (300, 3300) nm
eps = snse2.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_a422267295c9/lightsmith"
snse2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(snse2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (snse2/ermolaev-2022).

# ... load snse2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=snse2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About SnSe2 (Tin diselenide)

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 names: Tin diselenide, Tin(IV) selenide, Tin selenide, Stannic selenide, Bis(selanylidene)tin

API: /v1/materials/mat_c2aa249f7341 · slug snse2