Optical constants of MoSe2 (Molybdenum diselenide)
Pruszynska-Karbownik et al. 2026: n,k(o) 0.193–1.69 µm
Complex refractive index (n+ik)
Derived optical constants
Comments
MBE-grown 42-nm layer; room temperature. Ordinary ray (o).
References
E. Pruszynska-Karbownik, T. Fas, K. Branko, D. Yavorskiy, B. Stonio, R. Bozek, P. Karbownik, J. Wrobel, T. Czyszanowski, T. Stefaniuk, W. Pacuski, and J. Suffczyński. Optical bound states in the continuum in subwavelength gratings made of an epitaxial van der Waals material. ACS Nano 20, 7426-7437 (2026)
Data
Additional information
About Molybdenum diselenide
Molybdenum diselenide (MoSe2) is a layered compound similar in structure to molybdenum disulfide (MoS2). Each layer consists of a plane of molybdenum atoms sandwiched between two planes of selenium atoms. These layers are held together by weak van der Waals forces, allowing them to be easily exfoliated. In its bulk form, MoSe2 behaves as an indirect bandgap semiconductor. However, when reduced to a monolayer, its properties shift, and it becomes a direct bandgap semiconductor. This transition in electronic properties has attracted considerable interest in the fields of optoelectronics and nanotechnology. Potential applications include use in transistors, photodetectors, and other electronic or optoelectronic devices, especially when high-quality thin films or single layers are employed.
Other names and variations:- MoSe2
- Molybdenum selenide
- Diselanylidenemolybdenum