CdGa₂S₄ (Cadmium gallium sulfide)

Semiconductors and photonic platforms anisotropic

2 datasets, together covering 0.49–7.519 µm. Default: Kato et al. 2017: n(o) 0.490–7.52 µm.

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

Datasets

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# CdGa2S4 (Cadmium gallium sulfide): Kato et al. 2017: n(o) 0.490–7.52 µm
cdga2s4 = ls.fetch_refractiveindex("main", "CdGa2S4", "Kato-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdga2s4.range_nm)  # (490, 7519) nm
eps = cdga2s4.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_6920abd05953/lightsmith"
cdga2s4 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cdga2s4.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (cdga2s4/kato-2017-o).

# ... load cdga2s4 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=cdga2s4)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=490, 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 CdGa2S4 (Cadmium gallium sulfide)

Cadmium gallium sulfide (CdGa₂S₄) is an inorganic ternary compound that belongs to the family of chalcopyrite semiconductors. It commonly crystallizes in a tetragonal structure and is of interest for its optoelectronic and nonlinear optical properties. Due to its large bandgap and high nonlinear optical coefficients, CdGa₂S₄ is particularly suitable for frequency conversion applications in lasers, serving as a second- or third-harmonic generation material. Additionally, its capability to absorb and emit in the visible and near-infrared range makes it a potential material for photodetectors, photovoltaic cells, and light-emitting diodes. The compound is typically synthesized using techniques like solid-state reactions, chemical vapor deposition, or hydrothermal methods, allowing for control over its crystal quality and stoichiometry. Despite its promising properties, the presence of toxic cadmium necessitates careful handling and environmental considerations. Overall, CdGa₂S₄ offers a compelling array of attributes for optical and optoelectronic applications and continues to be a subject of active research.

Other names: Cadmium gallium sulfide, Cadmium thiogallate, Cadmium gallium sulphide

API: /v1/materials/mat_49f4181bbcc5 · slug cdga2s4