RefractiveIndex.INFO

Refractive index database

nk database   |   n2 database   |   about

Shelf

Book

Page

Optical constants of WSe2 (Tungsten diselenide)
Jung et al. 2019: monolayer (1L) film; n,k 0.38–0.89 µm

Wavelength: µm
 (0.38135–0.89352)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true
film_thickness: 1L
substrate: Al2O3

Comments

CVD-grown monolayer; Room temperature

References

G.-H. Jung, S. Yoo, Q-H. Park. Measuring the optical permittivity of two-dimensional materials without a priori knowledge of electronic transitions, Nanophotonics 8, 263-270 (2019) - see Supplementary materials

Data

[CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

Tungsten diselenide, WSe2

Tungsten diselenide (WSe2) is a member of the transition metal dichalcogenide (TMD) family, known for its distinctive layered structure. The individual layers are bound by weak van der Waals interactions, allowing for exfoliation into atomically thin sheets. In its monolayer form, WSe2 possesses a direct bandgap, distinguishing it from its bulk indirect bandgap property. This unique characteristic renders WSe2 as a prime candidate for optoelectronic applications, including photodetectors, light-emitting diodes (LEDs), and even photovoltaic devices. It has also been explored in the fabrication of field-effect transistors and quantum devices. The intriguing electronic and optical attributes of WSe2, especially when interfaced with other 2D materials, have garnered significant attention in advanced materials research.

External links