PbS (Lead sulfide)

Semiconductors and photonic platforms

1 dataset, together covering 3.5–10 µm. Default: Zemel et al. 1965: n 3.5–10 µm.

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

Datasets

Zemel et al. 1965: n 3.5–10 µm n 3.5–10 µm default

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# PbS (Lead sulfide): Zemel et al. 1965: n 3.5–10 µm
pbs = ls.fetch_refractiveindex("main", "PbS", "Zemel", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(pbs.range_nm)  # (3500, 10000) nm
eps = pbs.eps([5920])  # 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_e72bf448e261/lightsmith"
pbs = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(pbs.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (pbs/zemel-1965).

# ... load pbs as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=pbs)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=3500, stop_nm=10000, 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"]).

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_e72bf448e261/lightsmith?model=drude_lorentz"
pbs_dl = ls.DrudeLorentz.model_validate(json.load(urllib.request.urlopen(url)))

A dispersive Drude–Lorentz model for time-domain solvers.

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 PbS (Lead sulfide)

Lead sulfide (PbS) is a semiconducting material with intriguing optical and electronic characteristics. Falling within the family of IV-VI semiconductors, PbS has a narrow bandgap, making it especially responsive to infrared (IR) radiation. This sensitivity has led to its widespread use in infrared detectors and thermal imaging systems. Photodetectors crafted from PbS can operate in the short-wave and mid-infrared regions, making them integral in various military and civilian applications. Moreover, PbS quantum dots, which are tiny nanoscale particles, have drawn attention in recent years due to their potential in enhancing solar cell efficiency and in various optoelectronic applications. However, given that PbS contains lead, safety precautions are necessary during handling and disposal to mitigate environmental and health risks.

Other names: Lead sulfide, Lead(II) sulfide, Lead sulphide

Lead(II) sulfide - Wikipedia

API: /v1/materials/mat_73c05edb5ef2 · slug pbs