Optical constants

Refractive index of MoTe₂ (Molybdenum ditelluride)

Munkhbat et al. 2022: multilayer flakes; n(e) 0.30–1.69 µm

Data: tabulated n
Range: 0.3–1.69 µm
Points: 977
Optical axis: e
Licence: CC0-1.0

Uniaxial crystal, axes: oe

Axis Log x Log y

Click the plot to set the calculator wavelength.

At one wavelength

Refractive index n: 3.3839
Extinction coefficient k: 0

Permittivity ε₁: 11.4508
Permittivity ε₂: 0

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

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.339 µm⁻¹

Group index n_g: 3.5831
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

# MoTe2 (Molybdenum ditelluride): Munkhbat et al. 2022: multilayer flakes; n(e) 0.30–1.69 µm
mote2 = ls.fetch_refractiveindex("main", "MoTe2", "Munkhbat-e", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(mote2.range_nm)  # (300, 1690) nm
eps = mote2.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_3f601ee4f684/lightsmith"
mote2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(mote2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (mote2/munkhbat-2022-e).

# ... load mote2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=mote2)],
    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 flakes. Out-of-plane (extraordinary ray, e). Room temperature.

Conditions

direction: e

References

B. Munkhbat, P. Wrobel, T. J. Antosiewicz, T. O. Shegai. Optical constants of several multilayer transition metal dichalcogenides spectroscopic ellipsometry in the 300–1700 nm range: High index, anisotropy, and hyperbolicity. ACS Photonics 9, 2398–2407 (2022) (Numerical data kindly provided by Tomasz Antosiewicz)

doi:10.1021/acsphotonics.2c00433 Optical Constants of Several Multilayer Transition Metal Dichalcogenides Measured by Spectroscopic Ellipsometry in the 300–1700 nm Range: High Index, Anisotropy, and Hyperbolicity, ACS Photonics (2022)

Cite

Battulga Munkhbat, Piotr Wróbel, Tomasz J. Antosiewicz and Timur O. Shegai. Optical Constants of Several Multilayer Transition Metal Dichalcogenides Measured by Spectroscopic Ellipsometry in the 300–1700 nm Range: High Index, Anisotropy, and Hyperbolicity. ACS Photonics, 9, 2398-2407 (2022), doi:10.1021/acsphotonics.2c00433; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

977 rows as published

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

MoTe2 (Molybdenum ditelluride), Munkhbat et al. 2022: multilayer flakes; n(e) 0.30–1.69 µm: n and k versus wavelength
λ (µm)	n
0.3	3.70485
0.301	3.701568
0.302	3.698327
0.303	3.695126
0.304	3.691965
0.305	3.688842
0.306	3.685757
0.307	3.68271
0.308	3.6797
0.309	3.676726
0.31	3.673787
0.311	3.670884
0.312	3.668015
0.313	3.665179
0.314	3.662377
0.315	3.659608
0.316	3.656871
0.317	3.654166
0.318	3.651492
0.319	3.648848
0.32	3.646235
0.321	3.643652
0.322	3.641097
0.323	3.638572
0.324	3.636075
0.325	3.633606
0.326	3.631164
0.327	3.628749
0.328	3.626361
0.329	3.624
0.33	3.621664
0.331	3.619353
0.332	3.617068
0.333	3.614807
0.334	3.61257
0.335	3.610358
0.336	3.608169
0.337	3.606003
0.338	3.60386
0.339	3.60174
0.34	3.599642
0.341	3.597566
0.342	3.595512
0.343	3.593479
0.344	3.591466
0.345	3.589475
0.346	3.587504
0.347	3.585553
0.348	3.583622
0.349	3.58171
0.35	3.579818
0.351	3.577944
0.352	3.57609
0.353	3.574254
0.354	3.572436
0.355	3.570636
0.356	3.568854
0.357	3.567089
0.358	3.565342
0.359	3.563611
0.36	3.561898
0.361	3.560201
0.362	3.55852
0.363	3.556855
0.364	3.555207
0.365	3.553574
0.366	3.551957
0.367	3.550355
0.368	3.548768
0.369	3.547196
0.37	3.545638
0.371	3.544095
0.372	3.542567
0.373	3.541053
0.374	3.539552
0.375	3.538066
0.376	3.536593
0.377	3.535133
0.378	3.533687
0.379	3.532254
0.38	3.530834
0.381	3.529427
0.382	3.528032
0.383	3.52665
0.384	3.52528
0.385	3.523923
0.386	3.522577
0.387	3.521243
0.388	3.519921
0.389	3.518611
0.39	3.517312
0.391	3.516024
0.392	3.514748
0.393	3.513482
0.394	3.512228
0.395	3.510984
0.396	3.509751
0.397	3.508529
0.398	3.507317
0.399	3.506115
0.4	3.504924
0.401	3.503742
0.402	3.502571
0.403	3.501409
0.404	3.500257
0.405	3.499115
0.406	3.497982
0.407	3.496858
0.408	3.495744
0.409	3.494639
0.41	3.493543
0.411	3.492456
0.412	3.491378
0.413	3.490308
0.414	3.489248
0.415	3.488196
0.416	3.487152
0.417	3.486117
0.418	3.48509
0.419	3.484071
0.42	3.483061
0.421	3.482058
0.422	3.481063
0.423	3.480077
0.424	3.479098
0.425	3.478126
0.426	3.477163
0.427	3.476206
0.428	3.475258
0.429	3.474316
0.43	3.473382
0.431	3.472455
0.432	3.471536
0.433	3.470623
0.434	3.469717
0.435	3.468819
0.436	3.467927
0.437	3.467041
0.438	3.466163
0.439	3.465291
0.44	3.464426
0.441	3.463567
0.442	3.462715
0.443	3.461869
0.444	3.461029
0.445	3.460196
0.446	3.459369
0.447	3.458547
0.448	3.457732
0.449	3.456923
0.45	3.45612
0.451	3.455323
0.452	3.454531
0.453	3.453746
0.454	3.452965
0.455	3.452191
0.456	3.451422
0.457	3.450659
0.458	3.449901
0.459	3.449149
0.46	3.448402
0.461	3.44766
0.462	3.446924
0.463	3.446192
0.464	3.445466
0.465	3.444745
0.466	3.444029
0.467	3.443319
0.468	3.442613
0.469	3.441912
0.47	3.441216
0.471	3.440525
0.472	3.439838
0.473	3.439156
0.474	3.438479
0.475	3.437807
0.476	3.437139
0.477	3.436476
0.478	3.435817
0.479	3.435163
0.48	3.434513
0.481	3.433868
0.482	3.433227
0.483	3.43259
0.484	3.431958
0.485	3.43133
0.486	3.430706
0.487	3.430086
0.488	3.42947
0.489	3.428859
0.49	3.428251
0.491	3.427648
0.492	3.427048
0.493	3.426453
0.494	3.425861
0.495	3.425273
0.496	3.424689
0.497	3.424109
0.498	3.423533
0.499	3.42296
0.5	3.422391
0.501	3.421826
0.502	3.421264
0.503	3.420706
0.504	3.420152
0.505	3.419601
0.506	3.419054
0.507	3.41851
0.508	3.417969
0.509	3.417432
0.51	3.416899
0.511	3.416369
0.512	3.415842
0.513	3.415318
0.514	3.414798
0.515	3.414281
0.516	3.413767
0.517	3.413256
0.518	3.412749
0.519	3.412245
0.52	3.411743
0.521	3.411245
0.522	3.41075
0.523	3.410258
0.524	3.409769
0.525	3.409283
0.526	3.4088
0.527	3.40832
0.528	3.407843
0.529	3.407369
0.53	3.406898
0.531	3.406429
0.532	3.405963
0.533	3.4055
0.534	3.40504
0.535	3.404583
0.536	3.404128
0.537	3.403676
0.538	3.403227
0.539	3.402781
0.54	3.402337
0.541	3.401895
0.542	3.401457
0.543	3.401021
0.544	3.400587
0.545	3.400156
0.546	3.399727
0.547	3.399302
0.548	3.398878
0.549	3.398457
0.55	3.398038
0.551	3.397622
0.552	3.397209
0.553	3.396797
0.554	3.396388
0.555	3.395981
0.556	3.395577
0.557	3.395175
0.558	3.394775
0.559	3.394378
0.56	3.393983
0.561	3.39359
0.562	3.393199
0.563	3.392811
0.564	3.392424
0.565	3.39204
0.566	3.391658
0.567	3.391278
0.568	3.390901
0.569	3.390525
0.57	3.390152
0.571	3.38978
0.572	3.389411
0.573	3.389044
0.574	3.388678
0.575	3.388315
0.576	3.387954
0.577	3.387594
0.578	3.387237
0.579	3.386882
0.58	3.386528
0.581	3.386177
0.582	3.385827
0.583	3.38548
0.584	3.385134
0.585	3.38479
0.586	3.384448
0.587	3.384108
0.588	3.383769
0.589	3.383433
0.59	3.383098
0.591	3.382765
0.592	3.382434
0.593	3.382105
0.594	3.381777
0.595	3.381451
0.596	3.381127
0.597	3.380804
0.598	3.380484
0.599	3.380164
0.6	3.379847
0.601	3.379531
0.602	3.379217
0.603	3.378905
0.604	3.378594
0.605	3.378285
0.606	3.377978
0.607	3.377672
0.608	3.377367
0.609	3.377064
0.61	3.376763
0.611	3.376464
0.612	3.376165
0.613	3.375869
0.614	3.375574
0.615	3.37528
0.616	3.374988
0.617	3.374697
0.618	3.374408
0.619	3.374121
0.62	3.373835
0.621	3.37355
0.622	3.373267
0.623	3.372985
0.624	3.372704
0.625	3.372426
0.626	3.372148
0.627	3.371872
0.628	3.371597
0.629	3.371323
0.63	3.371051
0.631	3.370781
0.632	3.370511
0.633	3.370243
0.634	3.369976
0.635	3.369711
0.636	3.369447
0.637	3.369184
0.638	3.368923
0.639	3.368662
0.64	3.368404
0.641	3.368146
0.642	3.36789
0.643	3.367634
0.644	3.36738
0.645	3.367128
0.646	3.366876
0.647	3.366626
0.648	3.366377
0.649	3.366129
0.65	3.365883
0.651	3.365637
0.652	3.365393
0.653	3.36515
0.654	3.364908
0.655	3.364667
0.656	3.364428
0.657	3.364189
0.658	3.363952
0.659	3.363716
0.66	3.363481
0.661	3.363247
0.662	3.363014
0.663	3.362782
0.664	3.362551
0.665	3.362322
0.666	3.362093
0.667	3.361866
0.668	3.361639
0.669	3.361414
0.67	3.36119
0.671	3.360967
0.672	3.360744
0.673	3.360523
0.674	3.360303
0.675	3.360084
0.676	3.359866
0.677	3.359649
0.678	3.359433
0.679	3.359218
0.68	3.359004
0.681	3.358791
0.682	3.358578
0.683	3.358367
0.684	3.358157
0.685	3.357948
0.686	3.357739
0.687	3.357532
0.688	3.357326
0.689	3.35712
0.69	3.356916
0.691	3.356712
0.692	3.356509
0.693	3.356307
0.694	3.356107
0.695	3.355907
0.696	3.355708
0.697	3.355509
0.698	3.355312
0.699	3.355115
0.7	3.35492
0.701	3.354725
0.702	3.354531
0.703	3.354338
0.704	3.354146
0.705	3.353955
0.706	3.353765
0.707	3.353575
0.708	3.353386
0.709	3.353198
0.71	3.353011
0.711	3.352825
0.712	3.352639
0.713	3.352455
0.714	3.352271
0.715	3.352088
0.716	3.351906
0.717	3.351724
0.718	3.351543
0.719	3.351363
0.72	3.351184
0.721	3.351006
0.722	3.350828
0.723	3.350652
0.724	3.350475
0.725	3.3503
0.726	3.350126
0.727	3.349952
0.728	3.349779
0.729	3.349606
0.73	3.349435
0.731	3.349264
0.732	3.349094
0.733	3.348924
0.734	3.348756
0.735	3.348587
0.736	3.34842
0.737	3.348254
0.738	3.348088
0.739	3.347922
0.74	3.347758
0.741	3.347594
0.742	3.347431
0.743	3.347269
0.744	3.347107
0.745	3.346946
0.746	3.346785
0.747	3.346626
0.748	3.346466
0.749	3.346308
0.75	3.34615
0.751	3.345993
0.752	3.345837
0.753	3.345681
0.754	3.345526
0.755	3.345371
0.756	3.345217
0.757	3.345064
0.758	3.344911
0.759	3.344759
0.76	3.344608
0.761	3.344457
0.762	3.344307
0.763	3.344157
0.764	3.344008
0.765	3.34386
0.766	3.343712
0.767	3.343565
0.768	3.343418
0.769	3.343272
0.77	3.343127
0.771	3.342982
0.772	3.342838
0.773	3.342694
0.774	3.342551
0.775	3.342408
0.776	3.342266
0.777	3.342125
0.778	3.341984
0.779	3.341844
0.78	3.341704
0.781	3.341565
0.782	3.341426
0.783	3.341288
0.784	3.341151
0.785	3.341014
0.786	3.340877
0.787	3.340741
0.788	3.340606
0.789	3.340471
0.79	3.340337
0.791	3.340203
0.792	3.34007
0.793	3.339937
0.794	3.339805
0.795	3.339673
0.796	3.339542
0.797	3.339411
0.798	3.339281
0.799	3.339151
0.8	3.339022
0.801	3.338893
0.802	3.338765
0.803	3.338637
0.804	3.33851
0.805	3.338383
0.806	3.338257
0.807	3.338131
0.808	3.338006
0.809	3.337881
0.81	3.337757
0.811	3.337633
0.812	3.33751
0.813	3.337387
0.814	3.337264
0.815	3.337142
0.816	3.337021
0.817	3.3369
0.818	3.336779
0.819	3.336659
0.82	3.336539
0.821	3.33642
0.822	3.336301
0.823	3.336183
0.824	3.336065
0.825	3.335947
0.826	3.33583
0.827	3.335714
0.828	3.335597
0.829	3.335482
0.83	3.335366
0.831	3.335251
0.832	3.335137
0.833	3.335023
0.834	3.334909
0.835	3.334796
0.836	3.334683
0.837	3.334571
0.838	3.334459
0.839	3.334347
0.84	3.334236
0.841	3.334126
0.842	3.334015
0.843	3.333905
0.844	3.333796
0.845	3.333687
0.846	3.333578
0.847	3.33347
0.848	3.333362
0.849	3.333254
0.85	3.333147
0.851	3.33304
0.852	3.332934
0.853	3.332828
0.854	3.332722
0.855	3.332617
0.856	3.332512
0.857	3.332408
0.858	3.332304
0.859	3.3322
0.86	3.332096
0.861	3.331994
0.862	3.331891
0.863	3.331789
0.864	3.331687
0.865	3.331585
0.866	3.331484
0.867	3.331383
0.868	3.331283
0.869	3.331183
0.87	3.331083
0.871	3.330983
0.872	3.330884
0.873	3.330786
0.874	3.330687
0.875	3.330589
0.876	3.330492
0.877	3.330394
0.878	3.330297
0.879	3.330201
0.88	3.330104
0.881	3.330008
0.882	3.329913
0.883	3.329817
0.884	3.329723
0.885	3.329628
0.886	3.329534
0.887	3.32944
0.888	3.329346
0.889	3.329253
0.89	3.32916
0.891	3.329067
0.892	3.328974
0.893	3.328882
0.894	3.328791
0.895	3.328699
0.896	3.328608
0.897	3.328517
0.898	3.328427
0.899	3.328337
0.9	3.328247
0.901	3.328157
0.902	3.328068
0.903	3.327979
0.904	3.32789
0.905	3.327802
0.906	3.327714
0.907	3.327626
0.908	3.327539
0.909	3.327451
0.91	3.327365
0.911	3.327278
0.912	3.327192
0.913	3.327106
0.914	3.32702
0.915	3.326934
0.916	3.326849
0.917	3.326764
0.918	3.32668
0.919	3.326596
0.92	3.326512
0.921	3.326428
0.922	3.326344
0.923	3.326261
0.924	3.326178
0.925	3.326096
0.926	3.326013
0.927	3.325931
0.928	3.32585
0.929	3.325768
0.93	3.325687
0.931	3.325606
0.932	3.325525
0.933	3.325444
0.934	3.325364
0.935	3.325284
0.936	3.325205
0.937	3.325125
0.938	3.325046
0.939	3.324967
0.94	3.324888
0.941	3.32481
0.942	3.324732
0.943	3.324654
0.944	3.324576
0.945	3.324499
0.946	3.324422
0.947	3.324345
0.948	3.324268
0.949	3.324192
0.95	3.324116
0.951	3.32404
0.952	3.323964
0.953	3.323889
0.954	3.323814
0.955	3.323739
0.956	3.323664
0.957	3.32359
0.958	3.323515
0.959	3.323441
0.96	3.323368
0.961	3.323294
0.962	3.323221
0.963	3.323148
0.964	3.323075
0.965	3.323002
0.966	3.32293
0.967	3.322858
0.968	3.322786
0.969	3.322714
0.97	3.322643
0.971	3.322572
0.972	3.322501
0.973	3.32243
0.974	3.32236
0.975	3.322289
0.976	3.322219
0.977	3.322149
0.978	3.32208
0.979	3.32201
0.98	3.321941
0.981	3.321872
0.982	3.321803
0.983	3.321734
0.984	3.321666
0.985	3.321598
0.986	3.32153
0.987	3.321462
0.988	3.321395
0.989	3.321327
0.99	3.32126
0.991	3.321193
0.992	3.321127
0.993	3.32106
0.994	3.320994
0.995	3.320928
0.996	3.320862
0.997	3.320796
0.998	3.320731
0.999	3.320666
1.0	3.320601
1.0025	3.320439
1.005	3.320278
1.0075	3.320119
1.01	3.319961
1.0125	3.319803
1.015	3.319648
1.0175	3.319493
1.02	3.31934
1.0225	3.319187
1.025	3.319036
1.0275	3.318886
1.03	3.318737
1.0325	3.318589
1.035	3.318442
1.0375	3.318297
1.04	3.318152
1.0425	3.318008
1.045	3.317866
1.0475	3.317724
1.05	3.317584
1.0525	3.317444
1.055	3.317306
1.0575	3.317169
1.06	3.317032
1.0625	3.316897
1.065	3.316762
1.0675	3.316629
1.07	3.316496
1.0725	3.316364
1.075	3.316234
1.0775	3.316104
1.08	3.315975
1.0825	3.315847
1.085	3.31572
1.0875	3.315593
1.09	3.315468
1.0925	3.315344
1.095	3.31522
1.0975	3.315097
1.1	3.314976
1.1025	3.314855
1.105	3.314734
1.1075	3.314615
1.11	3.314496
1.1125	3.314379
1.115	3.314262
1.1175	3.314146
1.12	3.31403
1.1225	3.313916
1.125	3.313802
1.1275	3.313689
1.13	3.313576
1.1325	3.313465
1.135	3.313354
1.1375	3.313244
1.14	3.313135
1.1425	3.313026
1.145	3.312918
1.1475	3.312811
1.15	3.312705
1.1525	3.312599
1.155	3.312494
1.1575	3.31239
1.16	3.312286
1.1625	3.312183
1.165	3.312081
1.1675	3.311979
1.17	3.311878
1.1725	3.311778
1.175	3.311678
1.1775	3.311579
1.18	3.311481
1.1825	3.311383
1.185	3.311286
1.1875	3.311189
1.19	3.311093
1.1925	3.310998
1.195	3.310903
1.1975	3.310809
1.2	3.310716
1.2025	3.310623
1.205	3.31053
1.2075	3.310439
1.21	3.310348
1.2125	3.310257
1.215	3.310167
1.2175	3.310077
1.22	3.309989
1.2225	3.3099
1.225	3.309812
1.2275	3.309725
1.23	3.309638
1.2325	3.309552
1.235	3.309466
1.2375	3.309381
1.24	3.309297
1.2425	3.309212
1.245	3.309129
1.2475	3.309046
1.25	3.308963
1.2525	3.308881
1.255	3.3088
1.2575	3.308718
1.26	3.308638
1.2625	3.308558
1.265	3.308478
1.2675	3.308399
1.27	3.30832
1.2725	3.308242
1.275	3.308164
1.2775	3.308087
1.28	3.30801
1.2825	3.307934
1.285	3.307858
1.2875	3.307782
1.29	3.307707
1.2925	3.307633
1.295	3.307558
1.2975	3.307485
1.3	3.307411
1.3025	3.307339
1.305	3.307266
1.3075	3.307194
1.31	3.307122
1.3125	3.307051
1.315	3.30698
1.3175	3.30691
1.32	3.30684
1.3225	3.30677
1.325	3.306701
1.3275	3.306632
1.33	3.306564
1.3325	3.306496
1.335	3.306428
1.3375	3.306361
1.34	3.306294
1.3425	3.306228
1.345	3.306162
1.3475	3.306096
1.35	3.30603
1.3525	3.305965
1.355	3.305901
1.3575	3.305837
1.36	3.305773
1.3625	3.305709
1.365	3.305646
1.3675	3.305583
1.37	3.30552
1.3725	3.305458
1.375	3.305396
1.3775	3.305335
1.38	3.305274
1.3825	3.305213
1.385	3.305152
1.3875	3.305092
1.39	3.305032
1.3925	3.304973
1.395	3.304914
1.3975	3.304855
1.4	3.304796
1.4025	3.304738
1.405	3.30468
1.4075	3.304622
1.41	3.304565
1.4125	3.304508
1.415	3.304451
1.4175	3.304395
1.42	3.304339
1.4225	3.304283
1.425	3.304228
1.4275	3.304173
1.43	3.304118
1.4325	3.304063
1.435	3.304009
1.4375	3.303955
1.44	3.303901
1.4425	3.303847
1.445	3.303794
1.4475	3.303741
1.45	3.303689
1.4525	3.303636
1.455	3.303584
1.4575	3.303532
1.46	3.303481
1.4625	3.303429
1.465	3.303378
1.4675	3.303328
1.47	3.303277
1.4725	3.303227
1.475	3.303177
1.4775	3.303127
1.48	3.303078
1.4825	3.303028
1.485	3.302979
1.4875	3.302931
1.49	3.302882
1.4925	3.302834
1.495	3.302786
1.4975	3.302738
1.5	3.302691
1.5025	3.302643
1.505	3.302596
1.5075	3.30255
1.51	3.302503
1.5125	3.302457
1.515	3.302411
1.5175	3.302365
1.52	3.302319
1.5225	3.302274
1.525	3.302228
1.5275	3.302184
1.53	3.302139
1.5325	3.302094
1.535	3.30205
1.5375	3.302006
1.54	3.301962
1.5425	3.301918
1.545	3.301875
1.5475	3.301832
1.55	3.301789
1.5525	3.301746
1.555	3.301703
1.5575	3.301661
1.56	3.301619
1.5625	3.301577
1.565	3.301535
1.5675	3.301493
1.57	3.301452
1.5725	3.301411
1.575	3.30137
1.5775	3.301329
1.58	3.301288
1.5825	3.301248
1.585	3.301208
1.5875	3.301168
1.59	3.301128
1.5925	3.301088
1.595	3.301049
1.5975	3.30101
1.6	3.30097
1.6025	3.300932
1.605	3.300893
1.6075	3.300854
1.61	3.300816
1.6125	3.300778
1.615	3.30074
1.6175	3.300702
1.62	3.300664
1.6225	3.300627
1.625	3.30059
1.6275	3.300553
1.63	3.300516
1.6325	3.300479
1.635	3.300442
1.6375	3.300406
1.64	3.30037
1.6425	3.300333
1.645	3.300297
1.6475	3.300262
1.65	3.300226
1.6525	3.300191
1.655	3.300155
1.6575	3.30012
1.66	3.300085
1.6625	3.30005
1.665	3.300016
1.6675	3.299981
1.67	3.299947
1.6725	3.299913
1.675	3.299879
1.6775	3.299845
1.68	3.299811
1.6825	3.299778
1.685	3.299744
1.6875	3.299711
1.69	3.299678

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: —

MoTe₂ (Molybdenum ditelluride): all datasets

Bulk

Beal and Huges 1979: n,k 0.069–1.22 µm n,k 0.06911–1.216 µm default

Multilayer flakes

About MoTe2 (Molybdenum ditelluride)

Molybdenum ditelluride (MoTe₂) is a member of the transition metal dichalcogenides (TMDs) family, characterized by its layered structure. Each layer comprises a plane of molybdenum atoms situated between two planes of tellurium atoms. These layers are bound by weak van der Waals forces, enabling easy exfoliation into individual layers or few-layered structures. Like other TMDs, MoTe₂ undergoes a change in electronic properties when thinned down to a monolayer; it transitions from an indirect to a direct bandgap semiconductor. Due to this unique property and its high electron mobility, MoTe₂ is a material of significant interest in nanoelectronics, optoelectronics, and for potential applications in field-effect transistors, photodetectors, and other advanced electronic devices.

More about MoTe2 (Molybdenum ditelluride) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/MoTe2/nk/Munkhbat-e.yml
ID: ds_3f601ee4f684
API: /v1/datasets/ds_3f601ee4f684

Plot