Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 2.06892
Extinction coefficient k: 0

Permittivity ε₁: 4.28041
Permittivity ε₂: 0

Absorption coefficient α: 0 cm⁻¹
Penetration depth δ = λ/(2πk): — nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.99 µm⁻¹

Group index n_g: 2.65064
Group velocity dispersion: — fs²/mm

Dispersion parameter D: — ps/(nm·km)
Photon energy: 2.11001 eV

ε = (n + ik)², α = 4πk/λ, n_g = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# CsPb(Br,Cl)3 (Cesium lead tribromide - Cesium lead trichloride): Ermolaev et al. 2023: Br-1.8, Cl-1.2; n,k(e) 0.464–0.700 µm
cspb = ls.fetch_refractiveindex("other", "CsPb_BrCl_3", "Ermolaev-Br1.8Cl1.2-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cspb.range_nm)  # (464, 700) nm
eps = cspb.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_08cb03c73999/lightsmith"
cspb = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cspb.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (cspb-brcl-3/ermolaev-2023-br1-8cl1-2-e).

# ... load cspb as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=cspb)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=464, stop_nm=700, 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.

Comments and conditions

CsPbBr_1.8Cl_1.2 monocrystal. Extraordinary ray (e).

Conditions

direction: e

References

G. Ermolaev, A. P. Pushkarev, A. Zhizhchenko, A. A. Kuchmizhak, I. Iorsh, I. Kruglov, A. Mazitov, A. Ishteev, K. Konstantinova, D. Saranin, A. Slavich, D. Stosic, E. S. Zhukova, G. Tselikov, A. D. Carlo, A. Arsenin, K. S. Novoselov, S. V. Makarov, V. S. Volkov. Giant and tunable excitonic optical anisotropy in single-crystal halide perovskites. Nano Lett. 23, 2570–2577 (2023) (Numerical data kindly provided by Georgy Ermolaev)

doi:10.1021/acs.nanolett.2c04792 Giant and Tunable Excitonic Optical Anisotropy in Single-Crystal Halide Perovskites, Nano Letters (2023)

Cite

Georgy Ermolaev et al.. Giant and Tunable Excitonic Optical Anisotropy in Single-Crystal Halide Perovskites. Nano Letters, 23, 2570-2577 (2023), doi:10.1021/acs.nanolett.2c04792; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

237 rows as published

CSV comma separated TXT tab separated YAML n, k Full database record original YAML All quantities CSV JSON metadata

CsPb(Br,Cl)3 (Cesium lead tribromide - Cesium lead trichloride), Ermolaev et al. 2023: Br-1.8, Cl-1.2; n,k(e) 0.464–0.700 µm: n and k versus wavelength
λ (µm)	n	k
0.464	2.24377	0.0
0.465	2.24177	0.0
0.466	2.23979	0.0
0.467	2.23782	0.0
0.468	2.23586	0.0
0.469	2.23392	0.0
0.47	2.23198	0.0
0.471	2.23006	0.0
0.472	2.22815	0.0
0.473	2.22626	0.0
0.474	2.22438	0.0
0.475	2.2225	0.0
0.476	2.22064	0.0
0.477	2.21879	0.0
0.478	2.21696	0.0
0.479	2.21513	0.0
0.48	2.21332	0.0
0.481	2.21151	0.0
0.482	2.20972	0.0
0.483	2.20794	0.0
0.484	2.20617	0.0
0.485	2.20441	0.0
0.486	2.20267	0.0
0.487	2.20093	0.0
0.488	2.1992	0.0
0.489	2.19749	0.0
0.49	2.19578	0.0
0.491	2.19409	0.0
0.492	2.1924	0.0
0.493	2.19073	0.0
0.494	2.18906	0.0
0.495	2.18741	0.0
0.496	2.18577	0.0
0.497	2.18413	0.0
0.498	2.18251	0.0
0.499	2.18089	0.0
0.5	2.17929	0.0
0.501	2.17769	0.0
0.502	2.17611	0.0
0.503	2.17453	0.0
0.504	2.17297	0.0
0.505	2.17141	0.0
0.506	2.16986	0.0
0.507	2.16832	0.0
0.508	2.16679	0.0
0.509	2.16527	0.0
0.51	2.16376	0.0
0.511	2.16225	0.0
0.512	2.16076	0.0
0.513	2.15927	0.0
0.514	2.1578	0.0
0.515	2.15633	0.0
0.516	2.15487	0.0
0.517	2.15342	0.0
0.518	2.15197	0.0
0.519	2.15054	0.0
0.52	2.14911	0.0
0.521	2.14769	0.0
0.522	2.14628	0.0
0.523	2.14488	0.0
0.524	2.14349	0.0
0.525	2.1421	0.0
0.526	2.14072	0.0
0.527	2.13935	0.0
0.528	2.13799	0.0
0.529	2.13664	0.0
0.53	2.13529	0.0
0.531	2.13395	0.0
0.532	2.13262	0.0
0.533	2.13129	0.0
0.534	2.12997	0.0
0.535	2.12866	0.0
0.536	2.12736	0.0
0.537	2.12607	0.0
0.538	2.12478	0.0
0.539	2.1235	0.0
0.54	2.12222	0.0
0.541	2.12096	0.0
0.542	2.1197	0.0
0.543	2.11845	0.0
0.544	2.1172	0.0
0.545	2.11596	0.0
0.546	2.11473	0.0
0.547	2.1135	0.0
0.548	2.11229	0.0
0.549	2.11107	0.0
0.55	2.10987	0.0
0.551	2.10867	0.0
0.552	2.10748	0.0
0.553	2.10629	0.0
0.554	2.10511	0.0
0.555	2.10394	0.0
0.556	2.10277	0.0
0.557	2.10161	0.0
0.558	2.10046	0.0
0.559	2.09931	0.0
0.56	2.09817	0.0
0.561	2.09703	0.0
0.562	2.0959	0.0
0.563	2.09478	0.0
0.564	2.09366	0.0
0.565	2.09255	0.0
0.566	2.09144	0.0
0.567	2.09034	0.0
0.568	2.08925	0.0
0.569	2.08816	0.0
0.57	2.08708	0.0
0.571	2.086	0.0
0.572	2.08493	0.0
0.573	2.08386	0.0
0.574	2.0828	0.0
0.575	2.08175	0.0
0.576	2.0807	0.0
0.577	2.07965	0.0
0.578	2.07862	0.0
0.579	2.07758	0.0
0.58	2.07655	0.0
0.581	2.07553	0.0
0.582	2.07451	0.0
0.583	2.0735	0.0
0.584	2.0725	0.0
0.585	2.0715	0.0
0.586	2.0705	0.0
0.587	2.06951	0.0
0.588	2.06852	0.0
0.589	2.06754	0.0
0.59	2.06656	0.0
0.591	2.06559	0.0
0.592	2.06462	0.0
0.593	2.06366	0.0
0.594	2.06271	0.0
0.595	2.06175	0.0
0.596	2.06081	0.0
0.597	2.05987	0.0
0.598	2.05893	0.0
0.599	2.058	0.0
0.6	2.05707	0.0
0.601	2.05614	0.0
0.602	2.05522	0.0
0.603	2.05431	0.0
0.604	2.0534	0.0
0.605	2.0525	0.0
0.606	2.05159	0.0
0.607	2.0507	0.0
0.608	2.04981	0.0
0.609	2.04892	0.0
0.61	2.04803	0.0
0.611	2.04716	0.0
0.612	2.04628	0.0
0.613	2.04541	0.0
0.614	2.04454	0.0
0.615	2.04368	0.0
0.616	2.04282	0.0
0.617	2.04197	0.0
0.618	2.04112	0.0
0.619	2.04028	0.0
0.62	2.03944	0.0
0.621	2.0386	0.0
0.622	2.03776	0.0
0.623	2.03694	0.0
0.624	2.03611	0.0
0.625	2.03529	0.0
0.626	2.03447	0.0
0.627	2.03366	0.0
0.628	2.03285	0.0
0.629	2.03204	0.0
0.63	2.03124	0.0
0.631	2.03044	0.0
0.632	2.02965	0.0
0.633	2.02886	0.0
0.634	2.02807	0.0
0.635	2.02729	0.0
0.636	2.02651	0.0
0.637	2.02574	0.0
0.638	2.02496	0.0
0.639	2.02419	0.0
0.64	2.02343	0.0
0.641	2.02267	0.0
0.642	2.02191	0.0
0.643	2.02116	0.0
0.644	2.02041	0.0
0.645	2.01966	0.0
0.646	2.01892	0.0
0.647	2.01817	0.0
0.648	2.01744	0.0
0.649	2.01671	0.0
0.65	2.01598	0.0
0.651	2.01525	0.0
0.652	2.01453	0.0
0.653	2.01381	0.0
0.654	2.01309	0.0
0.655	2.01238	0.0
0.656	2.01167	0.0
0.657	2.01096	0.0
0.658	2.01025	0.0
0.659	2.00956	0.0
0.66	2.00886	0.0
0.661	2.00816	0.0
0.662	2.00747	0.0
0.663	2.00678	0.0
0.664	2.0061	0.0
0.665	2.00542	0.0
0.666	2.00474	0.0
0.667	2.00406	0.0
0.668	2.00339	0.0
0.669	2.00272	0.0
0.67	2.00206	0.0
0.671	2.00139	0.0
0.672	2.00073	0.0
0.673	2.00007	0.0
0.674	1.99942	0.0
0.675	1.99877	0.0
0.676	1.99812	0.0
0.677	1.99747	0.0
0.678	1.99683	0.0
0.679	1.99619	0.0
0.68	1.99555	0.0
0.681	1.99492	0.0
0.682	1.99429	0.0
0.683	1.99366	0.0
0.684	1.99303	0.0
0.685	1.99241	0.0
0.686	1.99179	0.0
0.687	1.99117	0.0
0.688	1.99055	0.0
0.689	1.98994	0.0
0.69	1.98933	0.0
0.691	1.98872	0.0
0.692	1.98812	0.0
0.693	1.98751	0.0
0.694	1.98692	0.0
0.695	1.98632	0.0
0.696	1.98572	0.0
0.697	1.98513	0.0
0.698	1.98454	0.0
0.699	1.98395	0.0
0.7	1.98337	0.0

Optical transmission calculator

Free-standing sample in vacuum, normal incidence

Transmittance T: —
Reflectance R: —

Fresnel reflection calculator

R_p: —
R_s: —
R = (R_p+R_s)/2: —
Phase φ_p: —
Phase φ_s: —
Brewster angle θ_B: —
Critical angle θ_C: —

Plot