Optical constants

Refractive index of CdSe (Cadmium selenide)

Ninomiya and Adachi 1995: n,k(o) 0.234–1.03 µm

Data: tabulated nk
Range: 0.2339–1.033 µm
Points: 500
Optical axis: o
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: 2.5876
Extinction coefficient k: 0.383402

Permittivity ε₁: 6.54865
Permittivity ε₂: 1.98418

Absorption coefficient α: 81994.1 cm⁻¹
Penetration depth δ = λ/(2πk): 243.92 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: 0.349345 µm⁻¹

Group index n_g: 2.38232
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

# CdSe (Cadmium selenide): Ninomiya and Adachi 1995: n,k(o) 0.234–1.03 µm
cdse = ls.fetch_refractiveindex("main", "CdSe", "Ninomiya-o", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(cdse.range_nm)  # (233.93, 1033.2) nm
eps = cdse.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_3fa2b83c6704/lightsmith"
cdse = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(cdse.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (cdse/ninomiya-adachi-1995-o).

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

Hexagonal CdSe. Fit of author's experimental data to a simplified model of the interband transitions (MDF). Ordinary ray (o), room temperature.

Conditions

direction: o

References

S. Ninomiya and S. Adachi. Optical properties of cubic and hexagonal CdSe. J. Appl. Phys. 78, 4681-4689 (1995)
[Calculation script (Python)]

doi:10.1063/1.359815 Optical properties of cubic and hexagonal CdSe, Journal of Applied Physics (1995)

Cite

Susumu Ninomiya and Sadao Adachi. Optical properties of cubic and hexagonal CdSe. Journal of Applied Physics, 78, 4681-4689 (1995), doi:10.1063/1.359815; [Calculation script (Python)]; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

500 rows as published

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

CdSe (Cadmium selenide), Ninomiya and Adachi 1995: n,k(o) 0.234–1.03 µm: n and k versus wavelength
λ (µm)	n	k
0.23393	1.7898	1.7225
0.2343	1.791	1.7225
0.23466	1.7923	1.7228
0.23503	1.7938	1.7234
0.23539	1.7954	1.7243
0.23576	1.7972	1.7255
0.23613	1.7991	1.727
0.2365	1.8013	1.7288
0.23687	1.8037	1.7307
0.23724	1.8064	1.7329
0.23762	1.8093	1.7354
0.23799	1.8124	1.738
0.23837	1.8158	1.7408
0.23874	1.8195	1.7437
0.23912	1.8235	1.7468
0.2395	1.8278	1.75
0.23988	1.8323	1.7533
0.24026	1.8372	1.7567
0.24065	1.8424	1.7601
0.24103	1.8479	1.7636
0.24142	1.8536	1.7671
0.2418	1.8597	1.7707
0.24219	1.8662	1.7742
0.24258	1.8729	1.7777
0.24297	1.8799	1.7812
0.24336	1.8872	1.7846
0.24376	1.8949	1.7879
0.24415	1.9028	1.7912
0.24455	1.9111	1.7943
0.24494	1.9196	1.7973
0.24534	1.9284	1.8001
0.24574	1.9375	1.8028
0.24614	1.9469	1.8053
0.24655	1.9565	1.8076
0.24695	1.9663	1.8097
0.24735	1.9764	1.8115
0.24776	1.9867	1.8132
0.24817	1.9972	1.8145
0.24858	2.0079	1.8156
0.24899	2.0188	1.8164
0.2494	2.0299	1.8169
0.24981	2.0411	1.8172
0.25022	2.0524	1.8171
0.25064	2.0638	1.8167
0.25106	2.0753	1.816
0.25148	2.0869	1.8149
0.2519	2.0985	1.8135
0.25232	2.1102	1.8118
0.25274	2.1219	1.8098
0.25316	2.1336	1.8074
0.25359	2.1452	1.8047
0.25402	2.1568	1.8017
0.25444	2.1684	1.7983
0.25487	2.1798	1.7947
0.25531	2.1912	1.7907
0.25574	2.2024	1.7864
0.25617	2.2136	1.7818
0.25661	2.2245	1.777
0.25704	2.2353	1.7719
0.25748	2.246	1.7665
0.25792	2.2564	1.7609
0.25837	2.2667	1.7551
0.25881	2.2767	1.7491
0.25925	2.2865	1.7428
0.2597	2.2962	1.7364
0.26015	2.3055	1.7298
0.2606	2.3147	1.723
0.26105	2.3236	1.7162
0.2615	2.3323	1.7092
0.26195	2.3408	1.702
0.26241	2.349	1.6948
0.26287	2.357	1.6875
0.26332	2.3648	1.6802
0.26378	2.3723	1.6727
0.26425	2.3796	1.6653
0.26471	2.3866	1.6578
0.26518	2.3935	1.6502
0.26564	2.4001	1.6427
0.26611	2.4065	1.6351
0.26658	2.4128	1.6276
0.26705	2.4188	1.6201
0.26753	2.4246	1.6126
0.268	2.4302	1.6051
0.26848	2.4356	1.5976
0.26896	2.4409	1.5902
0.26944	2.446	1.5829
0.26992	2.4509	1.5756
0.2704	2.4556	1.5683
0.27089	2.4602	1.5611
0.27138	2.4646	1.554
0.27186	2.4689	1.547
0.27235	2.473	1.54
0.27285	2.477	1.5332
0.27334	2.4808	1.5264
0.27384	2.4846	1.5197
0.27434	2.4881	1.5131
0.27484	2.4916	1.5066
0.27534	2.495	1.5002
0.27584	2.4982	1.4939
0.27634	2.5013	1.4877
0.27685	2.5044	1.4817
0.27736	2.5073	1.4758
0.27787	2.5102	1.47
0.27838	2.5129	1.4643
0.2789	2.5156	1.4588
0.27942	2.5182	1.4535
0.27993	2.5208	1.4483
0.28045	2.5232	1.4433
0.28098	2.5257	1.4385
0.2815	2.5281	1.4338
0.28203	2.5305	1.4293
0.28255	2.5329	1.4251
0.28308	2.5352	1.421
0.28362	2.5376	1.4171
0.28415	2.5401	1.4135
0.28469	2.5425	1.4101
0.28522	2.5451	1.4069
0.28576	2.5477	1.404
0.28631	2.5505	1.4013
0.28685	2.5534	1.3988
0.2874	2.5565	1.3966
0.28795	2.5598	1.3947
0.2885	2.5634	1.3929
0.28905	2.5672	1.3914
0.2896	2.5714	1.3902
0.29016	2.5759	1.3891
0.29072	2.5808	1.3882
0.29128	2.5862	1.3875
0.29184	2.592	1.3868
0.29241	2.5985	1.3863
0.29298	2.6054	1.3857
0.29355	2.613	1.3851
0.29412	2.6213	1.3843
0.29469	2.6302	1.3834
0.29527	2.6398	1.3821
0.29585	2.6501	1.3805
0.29643	2.661	1.3783
0.29701	2.6726	1.3756
0.2976	2.6848	1.372
0.29819	2.6976	1.3677
0.29878	2.7107	1.3624
0.29937	2.7241	1.3561
0.29997	2.7378	1.3487
0.30056	2.7514	1.3402
0.30116	2.765	1.3305
0.30177	2.7782	1.3196
0.30237	2.7911	1.3076
0.30298	2.8033	1.2946
0.30359	2.8148	1.2805
0.3042	2.8255	1.2656
0.30481	2.8352	1.25
0.30543	2.8439	1.2337
0.30605	2.8516	1.217
0.30667	2.8582	1.1999
0.3073	2.8637	1.1827
0.30792	2.8681	1.1654
0.30855	2.8715	1.1481
0.30919	2.874	1.131
0.30982	2.8755	1.1141
0.31046	2.8762	1.0976
0.3111	2.8762	1.0814
0.31174	2.8755	1.0656
0.31239	2.8741	1.0503
0.31303	2.8722	1.0355
0.31369	2.8698	1.0211
0.31434	2.867	1.0073
0.31499	2.8639	0.99393
0.31565	2.8604	0.98105
0.31632	2.8567	0.96865
0.31698	2.8528	0.95671
0.31765	2.8487	0.94521
0.31832	2.8444	0.93415
0.31899	2.84	0.9235
0.31967	2.8356	0.91324
0.32034	2.831	0.90336
0.32103	2.8265	0.89384
0.32171	2.8218	0.88466
0.3224	2.8172	0.87581
0.32309	2.8125	0.86726
0.32378	2.8079	0.859
0.32448	2.8033	0.85101
0.32518	2.7986	0.84329
0.32588	2.7941	0.83582
0.32658	2.7895	0.82858
0.32729	2.785	0.82157
0.328	2.7805	0.81476
0.32872	2.776	0.80816
0.32944	2.7716	0.80175
0.33016	2.7673	0.79552
0.33088	2.763	0.78947
0.33161	2.7587	0.78358
0.33234	2.7545	0.77785
0.33307	2.7503	0.77227
0.33381	2.7462	0.76683
0.33455	2.7422	0.76153
0.33529	2.7381	0.75636
0.33604	2.7342	0.75132
0.33679	2.7303	0.7464
0.33754	2.7264	0.74159
0.3383	2.7226	0.7369
0.33906	2.7188	0.73232
0.33982	2.7151	0.72783
0.34059	2.7114	0.72345
0.34136	2.7078	0.71917
0.34213	2.7042	0.71497
0.34291	2.7006	0.71087
0.34369	2.6971	0.70685
0.34448	2.6937	0.70292
0.34527	2.6903	0.69906
0.34606	2.6869	0.69529
0.34685	2.6836	0.69159
0.34765	2.6803	0.68797
0.34845	2.6771	0.68441
0.34926	2.6739	0.68093
0.35007	2.6708	0.67752
0.35089	2.6676	0.67416
0.3517	2.6646	0.67088
0.35252	2.6615	0.66765
0.35335	2.6585	0.66449
0.35418	2.6556	0.66138
0.35501	2.6527	0.65834
0.35585	2.6498	0.65534
0.35669	2.6469	0.65241
0.35754	2.6441	0.64952
0.35839	2.6413	0.64669
0.35924	2.6386	0.64391
0.3601	2.6359	0.64117
0.36096	2.6333	0.63849
0.36182	2.6306	0.63585
0.36269	2.628	0.63326
0.36357	2.6255	0.63071
0.36444	2.6229	0.62821
0.36533	2.6205	0.62575
0.36621	2.618	0.62333
0.3671	2.6156	0.62096
0.368	2.6132	0.61862
0.3689	2.6108	0.61632
0.3698	2.6085	0.61406
0.37071	2.6062	0.61184
0.37162	2.6039	0.60966
0.37254	2.6017	0.60751
0.37346	2.5995	0.60539
0.37439	2.5974	0.60332
0.37532	2.5952	0.60127
0.37626	2.5931	0.59926
0.3772	2.5911	0.59728
0.37814	2.589	0.59533
0.37909	2.587	0.59341
0.38005	2.585	0.59152
0.38101	2.5831	0.58966
0.38197	2.5812	0.58783
0.38294	2.5793	0.58603
0.38392	2.5775	0.58426
0.3849	2.5756	0.58251
0.38588	2.5738	0.58079
0.38687	2.5721	0.5791
0.38786	2.5704	0.57743
0.38886	2.5687	0.57579
0.38987	2.567	0.57417
0.39088	2.5653	0.57257
0.39189	2.5637	0.571
0.39291	2.5621	0.56945
0.39394	2.5606	0.56792
0.39497	2.5591	0.56641
0.39601	2.5576	0.56493
0.39705	2.5561	0.56346
0.3981	2.5547	0.56202
0.39915	2.5533	0.56059
0.40021	2.5519	0.55919
0.40127	2.5505	0.5578
0.40234	2.5492	0.55643
0.40342	2.5479	0.55507
0.4045	2.5467	0.55374
0.40559	2.5454	0.55242
0.40668	2.5442	0.55112
0.40778	2.5431	0.54983
0.40888	2.5419	0.54856
0.40999	2.5408	0.5473
0.41111	2.5397	0.54606
0.41223	2.5386	0.54483
0.41336	2.5376	0.54361
0.4145	2.5366	0.54241
0.41564	2.5356	0.54122
0.41679	2.5347	0.54004
0.41794	2.5338	0.53887
0.4191	2.5329	0.53772
0.42027	2.532	0.53657
0.42144	2.5312	0.53544
0.42263	2.5304	0.53432
0.42381	2.5296	0.5332
0.42501	2.5288	0.53209
0.42621	2.5281	0.531
0.42741	2.5274	0.52991
0.42863	2.5267	0.52882
0.42985	2.5261	0.52775
0.43108	2.5255	0.52668
0.43231	2.5249	0.52562
0.43355	2.5244	0.52456
0.4348	2.5238	0.52351
0.43606	2.5233	0.52246
0.43732	2.5229	0.52142
0.43859	2.5224	0.52039
0.43987	2.522	0.51935
0.44116	2.5216	0.51832
0.44245	2.5213	0.51729
0.44375	2.5209	0.51627
0.44506	2.5206	0.51524
0.44638	2.5204	0.51422
0.4477	2.5201	0.51319
0.44904	2.5199	0.51217
0.45038	2.5197	0.51115
0.45172	2.5195	0.51012
0.45308	2.5194	0.5091
0.45444	2.5193	0.50807
0.45582	2.5192	0.50704
0.4572	2.5192	0.50601
0.45859	2.5191	0.50498
0.45999	2.5191	0.50394
0.46139	2.5192	0.50289
0.46281	2.5192	0.50184
0.46423	2.5193	0.50079
0.46566	2.5194	0.49973
0.46711	2.5196	0.49866
0.46856	2.5197	0.49759
0.47002	2.5199	0.49651
0.47148	2.5201	0.49542
0.47296	2.5204	0.49432
0.47445	2.5207	0.49321
0.47595	2.521	0.49209
0.47745	2.5213	0.49095
0.47897	2.5216	0.48981
0.48049	2.522	0.48866
0.48203	2.5224	0.48749
0.48357	2.5229	0.48631
0.48513	2.5233	0.48511
0.48669	2.5238	0.4839
0.48827	2.5243	0.48267
0.48985	2.5248	0.48143
0.49145	2.5254	0.48017
0.49305	2.526	0.47889
0.49467	2.5266	0.47759
0.49629	2.5272	0.47627
0.49793	2.5278	0.47494
0.49958	2.5285	0.47358
0.50124	2.5292	0.4722
0.50291	2.5299	0.47079
0.50459	2.5307	0.46936
0.50629	2.5314	0.46791
0.50799	2.5322	0.46643
0.50971	2.533	0.46493
0.51143	2.5338	0.4634
0.51317	2.5346	0.46184
0.51492	2.5355	0.46026
0.51669	2.5363	0.45864
0.51846	2.5372	0.457
0.52025	2.5381	0.45532
0.52205	2.539	0.45362
0.52386	2.5399	0.45188
0.52569	2.5408	0.45011
0.52752	2.5417	0.44832
0.52938	2.5426	0.44649
0.53124	2.5435	0.44463
0.53312	2.5444	0.44275
0.53501	2.5453	0.44084
0.53691	2.5462	0.4389
0.53883	2.547	0.43695
0.54076	2.5479	0.43498
0.5427	2.5487	0.433
0.54466	2.5495	0.43103
0.54663	2.5503	0.42906
0.54862	2.5511	0.42711
0.55062	2.5518	0.4252
0.55264	2.5525	0.42335
0.55467	2.5532	0.42158
0.55672	2.5539	0.41992
0.55878	2.5547	0.4184
0.56086	2.5555	0.41706
0.56295	2.5565	0.41589
0.56506	2.5578	0.41492
0.56718	2.5596	0.41408
0.56932	2.5618	0.41327
0.57148	2.5647	0.41226
0.57365	2.5682	0.41078
0.57584	2.5722	0.40851
0.57804	2.5764	0.40524
0.58027	2.5802	0.40096
0.58251	2.5835	0.39589
0.58476	2.5858	0.39036
0.58704	2.5874	0.38474
0.58933	2.5882	0.37927
0.59164	2.5885	0.37411
0.59397	2.5885	0.36931
0.59632	2.5883	0.36487
0.59869	2.5879	0.36074
0.60107	2.5876	0.35688
0.60347	2.5873	0.35323
0.6059	2.587	0.34976
0.60834	2.5868	0.34641
0.6108	2.5867	0.34315
0.61328	2.5867	0.33996
0.61579	2.5867	0.3368
0.61831	2.5869	0.33366
0.62085	2.5871	0.33052
0.62342	2.5874	0.32735
0.62601	2.5877	0.32416
0.62861	2.5881	0.32092
0.63124	2.5885	0.31762
0.63389	2.5889	0.31427
0.63657	2.5894	0.31083
0.63927	2.5899	0.30732
0.64199	2.5904	0.30371
0.64473	2.5909	0.30001
0.64749	2.5914	0.2962
0.65028	2.5919	0.29229
0.6531	2.5923	0.28826
0.65594	2.5926	0.28411
0.6588	2.5929	0.27984
0.66169	2.593	0.27545
0.66461	2.5931	0.27093
0.66755	2.5929	0.2663
0.67051	2.5926	0.26156
0.6735	2.592	0.25673
0.67652	2.591	0.25184
0.67957	2.5898	0.24695
0.68264	2.588	0.24214
0.68575	2.5857	0.23754
0.68888	2.5829	0.23333
0.69204	2.5793	0.22985
0.69523	2.5752	0.22753
0.69844	2.5709	0.227
0.70169	2.5673	0.22886
0.70497	2.5661	0.23307
0.70828	2.5686	0.23816
0.71162	2.5747	0.24209
0.71499	2.5837	0.24468
0.71839	2.5972	0.24525
0.72183	2.6156	0.23858
0.7253	2.632	0.22074
0.7288	2.639	0.19635
0.73234	2.6363	0.17285
0.73591	2.628	0.15379
0.73952	2.6174	0.13935
0.74316	2.6063	0.12856
0.74684	2.5955	0.12041
0.75055	2.5854	0.11415
0.75431	2.5761	0.10921
0.75809	2.5674	0.10525
0.76192	2.5593	0.10199
0.76579	2.5518	0.099265
0.7697	2.5448	0.096944
0.77364	2.5382	0.094939
0.77763	2.532	0.093181
0.78166	2.5262	0.091623
0.78573	2.5206	0.090226
0.78984	2.5153	0.088961
0.794	2.5103	0.087807
0.7982	2.5055	0.086745
0.80244	2.5009	0.085761
0.80673	2.4964	0.084844
0.81107	2.4921	0.083984
0.81545	2.488	0.083175
0.81988	2.484	0.082409
0.82436	2.4801	0.081682
0.82889	2.4764	0.080988
0.83347	2.4728	0.080325
0.83809	2.4693	0.079689
0.84277	2.4658	0.079077
0.84751	2.4625	0.078487
0.8523	2.4592	0.077917
0.85714	2.4561	0.077364
0.86203	2.453	0.076829
0.86699	2.4499	0.076308
0.872	2.447	0.075802
0.87706	2.4441	0.075308
0.88219	2.4413	0.074826
0.88738	2.4385	0.074356
0.89263	2.4358	0.073895
0.89794	2.4331	0.073444
0.90332	2.4305	0.073003
0.90876	2.428	0.072569
0.91426	2.4254	0.072144
0.91984	2.423	0.071726
0.92548	2.4206	0.071316
0.93119	2.4182	0.070912
0.93697	2.4158	0.070514
0.94282	2.4135	0.070122
0.94875	2.4113	0.069737
0.95475	2.409	0.069356
0.96083	2.4068	0.068981
0.96699	2.4047	0.068611
0.97323	2.4025	0.068246
0.97955	2.4004	0.067885
0.98595	2.3984	0.067529
0.99243	2.3963	0.067177
0.999	2.3943	0.066829
1.0057	2.3923	0.066486
1.0124	2.3904	0.066146
1.0192	2.3884	0.065809
1.0262	2.3865	0.065476
1.0332	2.3847	0.065147

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: —

CdSe (Cadmium selenide): all datasets

Experimental data

Models and simulations

About CdSe (Cadmium selenide)

Cadmium selenide (CdSe) is an inorganic compound that commonly crystallizes in either the hexagonal wurtzite or cubic zincblende structure. This semiconductor material is particularly known for its strong quantum confinement effects, which make it a key ingredient in quantum dot technologies. With a bandgap of approximately 1.7 eV, CdSe exhibits strong optical absorption and photoluminescence in the visible range, making it an attractive material for light-emitting diodes, solar cells, and laser applications. Its optoelectronic properties can be finely tuned by altering the size and shape of CdSe nanoparticles, providing a versatile platform for a range of devices. While CdSe's properties make it a compelling choice for various applications, the use of cadmium, a toxic heavy metal, raises environmental and safety concerns that must be carefully managed. CdSe is often synthesized through colloidal methods, chemical vapor deposition, or molecular beam epitaxy, each offering different advantages in terms of crystal quality and control over material properties. The material remains a focus of ongoing research aimed at optimizing its favorable characteristics while addressing its environmental impact.

Cadmium selenide - Wikipedia

More about CdSe (Cadmium selenide) →

Provenance

Version: 1 (snapshot c5c2f18)
Source page: refractiveindex.info
Original file: database/data/main/CdSe/nk/Ninomiya-o.yml
ID: ds_3fa2b83c6704
API: /v1/datasets/ds_3fa2b83c6704

Plot