HfSe2 (Hafnium diselenide)

2D materials anisotropic

2 datasets, together covering 0.36–1 µm. Default: Zotev et al. 2023: n,k(o) 0.36–1.0 µm.

Compare datasets

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

Datasets

Multilayer flakes

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# HfSe2 (Hafnium diselenide): Zotev et al. 2023: n,k(o) 0.36–1.0 µm
hfse2 = ls.fetch_refractiveindex("main", "HfSe2", "Zotev-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hfse2.range_nm)  # (360, 1000) nm
eps = hfse2.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_2957542370d8/lightsmith"
hfse2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(hfse2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (hfse2/zotev-2023-o).

# ... load hfse2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=hfse2)],
    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 HfSe2 (Hafnium diselenide)

Hafnium diselenide (HfSe₂) is a layered transition metal dichalcogenide known for its intriguing electronic and optical properties. It crystallizes in a hexagonal structure, akin to other materials in its class, such as molybdenum disulfide (MoS₂). Notably, HfSe₂ exhibits a narrow indirect bandgap, which makes it a subject of interest for semiconductor applications in nanoelectronics and optoelectronics. Its layered nature allows for exfoliation into thin films or even monolayers, providing a platform for exploring two-dimensional material physics and enabling potential applications in flexible and transparent devices. In addition to its electronic properties, HfSe₂ has been studied for its thermal stability and mechanical strength, which further enhance its appeal in various technological applications. However, the optical properties, particularly its refractive index, are less explored compared to its electronic characteristics. The refractive index of HfSe₂ is crucial for designing optical components like waveguides and photodetectors, where precise control over light-matter interaction is essential. As research in this material progresses, understanding and tabulating its refractive index across different wavelengths will provide valuable insights for both fundamental studies and practical applications.

Other names: Hafnium diselenide, Bis(selanylidene)hafnium, Hafnium selenide

API: /v1/materials/mat_291e63b00c2c · slug hfse2