Germanium disulfide as an alternative high refractive index and transparent material for UV-visible nanophotonics

Aleksandr S. Slavich; Georgy A. Ermolaev; Ilya A. Zavidovskiy; Dmitriy V. Grudinin; Konstantin V. Kravtsov; Mikhail K. Tatmyshevskiy; Mikhail S. Mironov; Adilet N. Toksumakov; Gleb I. Tselikov; Ilia M. Fradkin; Kirill V. Voronin; Maksim R. Povolotskiy; Olga G. Matveeva; Alexander V. Syuy; Dmitry I. Yakubovsky; Dmitry M. Tsymbarenko; Ivan Kruglov; Davit A. Ghazaryan; Sergey M. Novikov; Andrey A. Vyshnevyy; Aleksey V. Arsenin; Valentyn S. Volkov; Kostya S. Novoselov

doi:10.1038/s41377-025-01886-y

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Germanium disulfide as an alternative high refractive index and transparent material for UV-visible nanophotonics

Original Articles

- Germanium disulfide as an alternative high refractive index and transparent material for UV-visible nanophotonics
- Light: Science & Applications Vol. 14, Issue 8, Pages: 2252-2262(2025)
- Affiliations：
  
  1.Emerging Technologies Research Center, XPANCEO, Internet City, Emmay Tower, Dubai, UAE
  2.Moscow Center for Advanced Studies, Kulakova str. 20, Moscow 123592, Russia
  3.Donostia International Physics Center (DIPC), Donostia, San Sebastián 20018, Spain
  4.Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
  5.Laboratory of Advanced Functional Materials, Yerevan State University, Yerevan 0025, Armenia
  6.National Graphene Institute (NGI), University of Manchester, Manchester M13 9PL, UK
  7.Department of Materials Science and Engineering, National University of Singapore, Singapore 03-09 EA, Singapore
  8.Institute for Functional Intelligent Materials, National University of Singapore, 117544 Singapore, Singapore
- Author bio：
  
  Valentyn S. Volkov (vsv@xpanceo.com)
  Kostya S. Novoselov (kostya@nus.edu.sg)
- Funds：
- DOI：10.1038/s41377-025-01886-y
  CLC：
- Received：10 December 2024，
  
  Revised：14 April 2025，
  
  Accepted：06 May 2025，
  
  Published Online：18 June 2025，
  
  Published：31 August 2025
- Accepted：
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Slavich, A. S. et al. Germanium disulfide as an alternative high refractive index and transparent material for UV-visible nanophotonics. Light: Science & Applications, 14, 2252-2262 (2025).
DOI：

Slavich, A. S. et al. Germanium disulfide as an alternative high refractive index and transparent material for UV-visible nanophotonics. Light: Science & Applications, 14, 2252-2262 (2025). DOI： 10.1038/s41377-025-01886-y.

摘要

Abstract

Thanks to their record high refractive index and giant optical anisotropy

van der Waals (vdW) materials have accelerated the development of nanophotonics. However

traditional high refractive index materials

such as titanium dioxide (TiO

)

still dominate in the most important visible range. This is due to the current lack of transparent vdW materials across the entire visible spectrum. In this context

we propose that germanium disulfide (GeS

) could offer a significant breakthrough. With its high refractive index

negligible losses

and biaxial optical anisotropy across the whole visible range

GeS

has the potential to complement TiO

and close the application gap of vdW materials in the visible spectrum. The addition of GeS

could have a profound impact on the design of van der Waals nanophotonic circuits for any operation wavelength from ultraviolet to infrared

emphasizing the significance of the potential impact of GeS

on the field of nanophotonics.

关键词

Keywords

references

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