Optical constants of WSe2 (Tungsten diselenide)
Jin et al. 2025: monolayer (1L) film; n,k 30–60 µm
Complex refractive index (n+ik)
Derived optical constants
Comments
Monolayer WSe2.
References
X. Jin, V. Aglieri, Y.-G. Jeong, A. Pezeshki, L. Skokan, M. Shagar, Y. Jia, P. Bianucci, A. Ruediger, E. Orgiu, A. Toma, L. Razzari.
Enhanced terahertz spectroscopy of a monolayer transition metal dichalcogenide.
Adv. Funct. Mater. 35, 2419841 (2025)
(Numerical data and calculation script kindly provided by Dr. Xin Jin)
[Calculation script (Python)]
Data
Additional information
About Tungsten diselenide
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.
Other names and variations:- WSe2