Volume 535, Issue 1 2200309
Research Article

Optical Nonlinearity of Emerging ZrS2 and HfS2 Semiconductors

Chunhui Lu

Chunhui Lu

Shaanxi Joint Lab of Graphene, State Key Laboratory of Photon-Technology in Western China Energy, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics and Photon-Technology, School of Physics, Northwest University, Xi'an, 710069 China

Search for more papers by this author
Yanqing Ge

Yanqing Ge

Shaanxi Joint Lab of Graphene, State Key Laboratory of Photon-Technology in Western China Energy, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics and Photon-Technology, School of Physics, Northwest University, Xi'an, 710069 China

Search for more papers by this author
Mingwei Luo

Mingwei Luo

Shaanxi Joint Lab of Graphene, State Key Laboratory of Photon-Technology in Western China Energy, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics and Photon-Technology, School of Physics, Northwest University, Xi'an, 710069 China

Search for more papers by this author
Xinlong Xu

Corresponding Author

Xinlong Xu

Shaanxi Joint Lab of Graphene, State Key Laboratory of Photon-Technology in Western China Energy, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics and Photon-Technology, School of Physics, Northwest University, Xi'an, 710069 China

E-mail: [email protected]

Search for more papers by this author
First published: 13 December 2022

Abstract

Compatible with existing processing technology, chemical vapor deposition method is used to synthesize ZrS2 and HfS2 films a a large scale. The nonlinear optical properties are characterized by Z-scan measurement with femtosecond pulses at 800 nm. The results show that saturable absorption happens in ZrS2 owing to the larger ground state absorption than the excited state absorption, while reverse saturable absorption appears in HfS2 due to the two-photon absorption. The figure of merit values of ZrS2 (≈4.30 ± 0.12 × 10−15 esu cm) and HfS2 (≈6.0 ± 1.4 × 10−15 esu cm) are much larger than those of MoS2 and graphene in ultrafast nonlinear optical performance at the wavelength of 800 nm.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.