Optical constants

Refractive index of In₂Se₃ (Indium selenide)

Zotev et al. 2023: n,k 0.36–1.0 µm

Data: tabulated nk
Range: 0.36–1 µm
Points: 402
Licence: CC0-1.0

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 3.43725
Extinction coefficient k: 0.291

Permittivity ε₁: 11.73
Permittivity ε₂: 2.00048

Absorption coefficient α: 62233 cm⁻¹
Penetration depth δ = λ/(2πk): 321.373 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -1.875 µm⁻¹

Group index n_g: 4.539
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

# In2Se3 (Indium selenide): Zotev et al. 2023: n,k 0.36–1.0 µm
in2se3 = ls.fetch_refractiveindex("main", "In2Se3", "Zotev", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(in2se3.range_nm)  # (360, 1000) nm
eps = in2se3.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_57d81f45340d/lightsmith"
in2se3 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(in2se3.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (in2se3/zotev-2023).

# ... load in2se3 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=in2se3)],
    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.

Comments and conditions

Multilayer crystals. Isotropic. Room temperature.

References

P. G. Zotev, Y. Wang, D. Andres-Penares, T. Severs-Millard, S. Randerson, X. Hu, L. Sortino, C. Louca, M. Brotons-Gisbert, T. Huq, S. Vezzoli, R. Sapienza, T. F. Krauss, B. D. Gerardot, A. I. Tartakovskii. Van der Waals materials for applications in nanophotonics. Laser and Photonics Rev. 17, 2200957 (2023) (Numerical data kindly provided by Panaiot Zotev)

doi:10.1002/lpor.202200957 Van der Waals Materials for Applications in Nanophotonics, Laser & Photonics Reviews (2023)

Cite

Panaiot G. Zotev et al.. Van der Waals Materials for Applications in Nanophotonics. Laser & Photonics Reviews, 17, 2200957 (2023), doi:10.1002/lpor.202200957; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

402 rows as published

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

In2Se3 (Indium selenide), Zotev et al. 2023: n,k 0.36–1.0 µm: n and k versus wavelength
λ (µm)	n	k
0.36	3.419	1.525
0.3616	3.426	1.513
0.3632	3.433	1.5
0.3648	3.44	1.487
0.3664	3.447	1.475
0.368	3.454	1.462
0.3696	3.46	1.45
0.3712	3.466	1.437
0.3728	3.473	1.424
0.3744	3.479	1.412
0.376	3.484	1.399
0.3776	3.49	1.387
0.3792	3.496	1.374
0.3808	3.501	1.362
0.3824	3.506	1.35
0.384	3.511	1.337
0.3856	3.516	1.325
0.3872	3.521	1.313
0.3888	3.525	1.3
0.3904	3.53	1.288
0.392	3.534	1.276
0.3936	3.538	1.264
0.3952	3.542	1.252
0.3968	3.546	1.24
0.3984	3.55	1.228
0.4	3.553	1.216
0.4016	3.557	1.204
0.4032	3.56	1.192
0.4048	3.563	1.181
0.4064	3.566	1.169
0.408	3.569	1.157
0.4096	3.572	1.146
0.4112	3.575	1.134
0.4128	3.577	1.123
0.4144	3.58	1.111
0.416	3.582	1.1
0.4176	3.584	1.088
0.4192	3.586	1.077
0.4208	3.588	1.066
0.4224	3.59	1.055
0.424	3.591	1.044
0.4256	3.593	1.033
0.4272	3.594	1.022
0.4288	3.596	1.011
0.4304	3.597	1.0
0.432	3.598	0.99
0.4336	3.599	0.979
0.4352	3.6	0.969
0.4368	3.601	0.958
0.4384	3.602	0.948
0.44	3.602	0.937
0.4416	3.603	0.927
0.4432	3.603	0.917
0.4448	3.604	0.907
0.4464	3.604	0.897
0.448	3.604	0.887
0.4496	3.604	0.877
0.4512	3.604	0.867
0.4528	3.604	0.857
0.4544	3.604	0.848
0.456	3.604	0.838
0.4576	3.604	0.829
0.4592	3.603	0.819
0.4608	3.603	0.81
0.4624	3.602	0.801
0.464	3.602	0.791
0.4656	3.601	0.782
0.4672	3.6	0.773
0.4688	3.599	0.764
0.4704	3.599	0.755
0.472	3.598	0.747
0.4736	3.597	0.738
0.4752	3.596	0.729
0.4768	3.594	0.721
0.4784	3.593	0.712
0.48	3.592	0.704
0.4816	3.591	0.695
0.4832	3.589	0.687
0.4848	3.588	0.679
0.4864	3.587	0.671
0.488	3.585	0.663
0.4896	3.584	0.655
0.4912	3.582	0.647
0.4928	3.581	0.639
0.4944	3.579	0.631
0.496	3.577	0.624
0.4976	3.575	0.616
0.4992	3.574	0.608
0.5008	3.572	0.601
0.5024	3.57	0.593
0.504	3.568	0.586
0.5056	3.566	0.579
0.5072	3.564	0.572
0.5088	3.562	0.565
0.5104	3.56	0.558
0.512	3.558	0.551
0.5136	3.556	0.544
0.5152	3.554	0.537
0.5168	3.552	0.53
0.5184	3.55	0.523
0.52	3.547	0.517
0.5216	3.545	0.51
0.5232	3.543	0.504
0.5248	3.54	0.497
0.5264	3.538	0.491
0.528	3.536	0.485
0.5296	3.533	0.478
0.5312	3.531	0.472
0.5321	3.53	0.469
0.5328	3.528	0.466
0.5344	3.526	0.46
0.536	3.524	0.454
0.5376	3.521	0.448
0.5392	3.519	0.442
0.5408	3.516	0.437
0.5424	3.514	0.431
0.544	3.511	0.425
0.5456	3.509	0.419
0.5472	3.506	0.414
0.5488	3.503	0.408
0.5504	3.501	0.403
0.552	3.498	0.398
0.5536	3.496	0.392
0.5552	3.493	0.387
0.5568	3.49	0.382
0.5584	3.487	0.377
0.56	3.485	0.371
0.5616	3.482	0.366
0.5632	3.479	0.361
0.5648	3.477	0.356
0.5664	3.474	0.352
0.568	3.471	0.347
0.5696	3.468	0.342
0.5712	3.466	0.337
0.5728	3.463	0.332
0.5744	3.46	0.328
0.576	3.458	0.323
0.5776	3.455	0.319
0.5792	3.452	0.314
0.5808	3.449	0.31
0.5824	3.446	0.305
0.584	3.443	0.301
0.5856	3.441	0.297
0.5872	3.438	0.292
0.5888	3.435	0.288
0.5904	3.432	0.284
0.592	3.429	0.28
0.5936	3.427	0.276
0.5952	3.424	0.272
0.5968	3.421	0.268
0.5984	3.418	0.264
0.6	3.415	0.26
0.6016	3.413	0.256
0.6032	3.41	0.252
0.6048	3.407	0.249
0.6064	3.404	0.245
0.608	3.401	0.241
0.6096	3.398	0.238
0.6112	3.395	0.234
0.6128	3.393	0.231
0.6144	3.39	0.227
0.616	3.387	0.224
0.6176	3.384	0.22
0.6192	3.381	0.217
0.6208	3.378	0.213
0.6224	3.376	0.21
0.624	3.373	0.207
0.6256	3.37	0.204
0.6272	3.367	0.2
0.6288	3.364	0.197
0.6304	3.362	0.194
0.632	3.359	0.191
0.6336	3.356	0.188
0.6352	3.353	0.185
0.6368	3.35	0.182
0.6384	3.347	0.179
0.64	3.345	0.176
0.6416	3.342	0.173
0.6432	3.339	0.17
0.6448	3.336	0.168
0.6464	3.334	0.165
0.648	3.331	0.162
0.6496	3.328	0.159
0.6512	3.325	0.157
0.6528	3.322	0.154
0.6544	3.32	0.152
0.656	3.317	0.149
0.6576	3.314	0.146
0.6592	3.311	0.144
0.6608	3.309	0.142
0.6624	3.306	0.139
0.664	3.303	0.137
0.6656	3.3	0.134
0.6672	3.298	0.132
0.6688	3.295	0.13
0.6704	3.292	0.127
0.672	3.289	0.125
0.6736	3.287	0.123
0.6752	3.284	0.121
0.6768	3.281	0.119
0.6784	3.279	0.116
0.68	3.276	0.114
0.6816	3.273	0.112
0.6832	3.271	0.11
0.6848	3.268	0.108
0.6864	3.265	0.106
0.688	3.263	0.104
0.6896	3.26	0.102
0.6912	3.258	0.1
0.6928	3.255	0.098
0.6944	3.252	0.097
0.696	3.25	0.095
0.6976	3.247	0.093
0.6992	3.245	0.091
0.7008	3.242	0.089
0.7024	3.239	0.088
0.704	3.237	0.086
0.7056	3.234	0.084
0.7072	3.232	0.083
0.7088	3.229	0.081
0.7104	3.227	0.079
0.712	3.224	0.078
0.7136	3.221	0.076
0.7152	3.219	0.075
0.7168	3.216	0.073
0.7184	3.214	0.072
0.72	3.212	0.07
0.7216	3.209	0.069
0.7232	3.207	0.067
0.7248	3.204	0.066
0.7264	3.202	0.065
0.728	3.199	0.063
0.7296	3.197	0.062
0.7312	3.194	0.061
0.7328	3.192	0.059
0.7344	3.19	0.058
0.736	3.187	0.057
0.7376	3.185	0.056
0.7392	3.182	0.055
0.7408	3.18	0.053
0.7424	3.178	0.052
0.744	3.175	0.051
0.7456	3.173	0.05
0.7472	3.171	0.049
0.7488	3.168	0.048
0.7504	3.166	0.047
0.752	3.164	0.046
0.7536	3.161	0.045
0.7552	3.159	0.044
0.7568	3.157	0.043
0.7584	3.155	0.042
0.76	3.152	0.041
0.7616	3.15	0.04
0.7632	3.148	0.039
0.7648	3.146	0.038
0.7664	3.143	0.038
0.768	3.141	0.037
0.7696	3.139	0.036
0.7712	3.137	0.035
0.7728	3.135	0.034
0.7744	3.132	0.034
0.776	3.13	0.033
0.7776	3.128	0.032
0.7792	3.126	0.032
0.7808	3.124	0.031
0.7824	3.122	0.03
0.784	3.12	0.03
0.7856	3.118	0.029
0.7872	3.116	0.028
0.7888	3.114	0.028
0.7904	3.112	0.027
0.792	3.11	0.027
0.7936	3.107	0.026
0.7952	3.105	0.026
0.7968	3.103	0.025
0.7984	3.101	0.025
0.8	3.099	0.024
0.8016	3.097	0.024
0.8032	3.096	0.023
0.8048	3.094	0.023
0.8064	3.092	0.023
0.808	3.09	0.022
0.8096	3.088	0.022
0.8112	3.086	0.022
0.8128	3.084	0.021
0.8144	3.083	0.021
0.816	3.081	0.021
0.8176	3.079	0.02
0.8192	3.077	0.02
0.8208	3.075	0.02
0.8224	3.073	0.02
0.824	3.072	0.019
0.8256	3.07	0.019
0.8272	3.068	0.019
0.8288	3.066	0.019
0.8304	3.064	0.019
0.832	3.063	0.019
0.8336	3.061	0.019
0.8352	3.06	0.018
0.8368	3.058	0.018
0.8384	3.057	0.018
0.84	3.055	0.018
0.8416	3.054	0.018
0.8432	3.052	0.018
0.8448	3.051	0.018
0.8464	3.049	0.018
0.848	3.048	0.018
0.8496	3.046	0.018
0.8512	3.045	0.018
0.8528	3.044	0.018
0.8544	3.042	0.018
0.856	3.041	0.018
0.8576	3.039	0.018
0.8592	3.038	0.018
0.8608	3.036	0.018
0.8624	3.035	0.018
0.864	3.034	0.018
0.8656	3.032	0.018
0.8672	3.031	0.018
0.8688	3.029	0.018
0.8704	3.028	0.018
0.872	3.027	0.018
0.8736	3.026	0.018
0.8752	3.025	0.018
0.8768	3.024	0.018
0.8784	3.023	0.018
0.88	3.021	0.018
0.8816	3.02	0.018
0.8832	3.019	0.018
0.8848	3.018	0.018
0.8864	3.017	0.018
0.888	3.016	0.018
0.8896	3.015	0.018
0.8912	3.014	0.018
0.8928	3.013	0.018
0.8944	3.012	0.018
0.896	3.011	0.018
0.8976	3.01	0.018
0.8992	3.009	0.018
0.9008	3.008	0.018
0.9024	3.006	0.018
0.904	3.005	0.018
0.9056	3.004	0.018
0.9072	3.003	0.018
0.9088	3.002	0.018
0.9104	3.001	0.018
0.912	3.0	0.018
0.9136	2.999	0.018
0.9152	2.998	0.018
0.9168	2.998	0.018
0.9184	2.997	0.018
0.92	2.996	0.018
0.9216	2.995	0.018
0.9232	2.994	0.018
0.9248	2.993	0.018
0.9264	2.992	0.018
0.928	2.991	0.018
0.9296	2.991	0.018
0.9312	2.99	0.018
0.9328	2.989	0.018
0.9344	2.988	0.018
0.936	2.987	0.018
0.9376	2.986	0.018
0.9392	2.985	0.018
0.9408	2.985	0.018
0.9424	2.984	0.018
0.944	2.983	0.018
0.9456	2.982	0.018
0.9472	2.981	0.018
0.9488	2.98	0.018
0.9504	2.98	0.018
0.952	2.979	0.018
0.9536	2.978	0.018
0.9552	2.977	0.018
0.9568	2.976	0.018
0.9584	2.976	0.018
0.96	2.975	0.018
0.9616	2.974	0.018
0.9632	2.973	0.018
0.9648	2.972	0.019
0.9664	2.972	0.019
0.968	2.971	0.019
0.9696	2.97	0.019
0.9712	2.97	0.019
0.9728	2.969	0.019
0.9744	2.968	0.019
0.976	2.968	0.019
0.9776	2.967	0.019
0.9792	2.966	0.019
0.9808	2.966	0.019
0.9824	2.965	0.019
0.984	2.964	0.019
0.9856	2.964	0.019
0.9872	2.963	0.019
0.9888	2.962	0.019
0.9904	2.962	0.019
0.992	2.961	0.019
0.9936	2.96	0.019
0.9952	2.96	0.019
0.9968	2.959	0.019
0.9984	2.958	0.019
1.0	2.958	0.019

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: —

In₂Se₃ (Indium selenide): all datasets

Multilayer flakes

Zotev et al. 2023: n,k 0.36–1.0 µm n,k 0.36–1 µm default

About In2Se3 (Indium selenide)

Indium Selenide (In₂Se₃) is a compound semiconductor material with a unique layered crystal structure, belonging to the group of III-VI semiconductors. It is known for its photoelectric properties and phase-change characteristics, making it a material of interest in a variety of applications ranging from photovoltaics to phase-change memory devices. In₂Se₃ exhibits polymorphism, existing in different structural phases (α, β, γ), each having distinct electrical and optical properties. This makes it versatile for use in thin-film solar cells, where its direct bandgap can be tuned according to its phase and stoichiometry. The material is also studied for its potential use in optoelectronic devices, such as photodetectors and infrared sensors, due to its strong absorption in the visible to near-infrared spectrum. Understanding the optical properties, including the refractive index of In₂Se₃, is essential for the design and optimization of these devices. The refractive index data across different wavelengths can provide critical insights for tailoring the material's properties for specific applications.

More about In2Se3 (Indium selenide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/In2Se3/nk/Zotev.yml
ID: ds_57d81f45340d
API: /v1/datasets/ds_57d81f45340d

Plot