Axis Log x Log y

Click the plot to set the calculator wavelength. Note: k data cover 305.3-1097.7 nm only; k = 0 elsewhere in the n range 301.9-1096.8 nm.

At one wavelength

Refractive index n: 1.5098
Extinction coefficient k: 0.00983641

Permittivity ε₁: 2.27941
Permittivity ε₂: 0.0297021

Absorption coefficient α: 2103.61 cm⁻¹
Penetration depth δ = λ/(2πk): 9507.48 nm

Abbe number V_d: —
Chromatic dispersion dn/dλ: -0.148472 µm⁻¹

Group index n_g: 1.59704
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

# PEDOT:PSS: Chen et al. 2015: n,k 0.3–1.1 µm
pedot_pss = ls.fetch_refractiveindex("other", "PEDOT-PSS", "Chen", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(pedot_pss.range_nm)  # (301.9, 1096.8) nm
eps = pedot_pss.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_6d8304d662f6/lightsmith"
pedot_pss = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(pedot_pss.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (pedot-pss/chen-2015).

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

PEDOT:PSS (Clevios AI 4083) thin film.

Notes on the source data (kept exactly as published):

k data cover 305.3-1097.7 nm only; k = 0 elsewhere in the n range 301.9-1096.8 nm

References

C.-W. Chen, S.-Y. Hsiao, C.-Y. Chen, H.-W. Kang, Z.-Y. Huang, H.-W. Lin. Optical properties of organometal halide perovskite thin films and general device structure design rules for perovskite single and tandem solar cells. J. Mater. Chem. A 3, 9152-9159 (2015) (Data points extracted from Supplementary materials, Figure S2)

doi:10.1039/c4ta05237d Optical properties of organometal halide perovskite thin films and general device structure design rules for perovskite single and tandem solar cells, Journal of Materials Chemistry A (2015)

Cite

Chang-Wen Chen et al.. Optical properties of organometal halide perovskite thin films and general device structure design rules for perovskite single and tandem solar cells. Journal of Materials Chemistry A, 3, 9152-9159 (2015), doi:10.1039/c4ta05237d; Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

Computed on 48 wavelengths, the same grid as the API and the library

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

PEDOT:PSS, Chen et al. 2015: n,k 0.3–1.1 µm: n and k versus wavelength
λ (µm)	n	k
0.3019	1.5806	0
0.3062	1.5773	0.0004308182
0.3113	1.5746	0.0004354545
0.3189	1.5711	0.0004846875
0.3274	1.5675	0.0006307813
0.3367	1.5636	0.0007885294
0.3461	1.5602	0.0009528571
0.3563	1.5563	0.001135972
0.3665	1.5533	0.001291806
0.3775	1.5499	0.00147375
0.3868	1.5475	0.001632756
0.4021	1.5433	0.00201375
0.4149	1.5403	0.002396
0.4276	1.5373	0.002747366
0.4395	1.5349	0.003163226
0.4522	1.5323	0.003596224
0.4641	1.53	0.003991463
0.476	1.5276	0.004310732
0.4896	1.5253	0.004690813
0.5066	1.5223	0.005298943
0.5261	1.5191	0.006236667
0.5465	1.5161	0.007392727
0.5652	1.5129	0.008386
0.5856	1.5101	0.009702051
0.6085	1.5067	0.01137035
0.6399	1.5022	0.01386182
0.6586	1.4994	0.01532513
0.679	1.4964	0.01734855
0.7011	1.4934	0.01982888
0.724	1.4902	0.0226025
0.7461	1.4872	0.025404
0.7741	1.4836	0.02975457
0.8038	1.4797	0.03471425
0.8276	1.4767	0.03950458
0.8522	1.4742	0.04463727
0.8786	1.4714	0.05048793
0.9032	1.469	0.05687566
0.9278	1.4671	0.06356615
0.949	1.4665	0.06972984
0.9703	1.4659	0.07636074
0.9915	1.4661	0.08293153
1.0102	1.4663	0.08907474
1.0229	1.4672	0.0932275
1.0374	1.468	0.09824765
1.0544	1.4695	0.1043306
1.0671	1.4713	0.1086925
1.0798	1.4728	0.1130498
1.0968	1.476	0.1190308

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