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Giant nonlinear optical activity in two-dimensional palladium diselenide

Author

Listed:
  • Juan Yu

    (Central South University
    Central South University
    Hangzhou Dianzi University)

  • Xiaofei Kuang

    (Hangzhou Dianzi University)

  • Junzi Li

    (Shenzhen University)

  • Jiahong Zhong

    (Central South University
    Central South University)

  • Cheng Zeng

    (Central South University
    Central South University)

  • Lingkai Cao

    (Central South University
    Central South University)

  • Zongwen Liu

    (The University of Sydney)

  • Zhouxiaosong Zeng

    (Hunan University)

  • Ziyu Luo

    (Hunan University)

  • Tingchao He

    (Shenzhen University)

  • Anlian Pan

    (Hunan University)

  • Yanping Liu

    (Central South University
    Central South University
    Shenzhen Research Institute of Central South University)

Abstract

Nonlinear optical effects in layered two-dimensional transition metal chalcogenides have been extensively explored recently because of the promising prospect of the nonlinear optical effects for various optoelectronic applications. However, these materials possess sizable bandgaps ranging from visible to ultraviolet region, so the investigation of narrow-bandgap materials remains deficient. Here, we report our comprehensive study on the nonlinear optical processes in palladium diselenide (PdSe2) that has a near-infrared bandgap. Interestingly, this material exhibits a unique thickness-dependent second harmonic generation feature, which is in contrast to other transition metal chalcogenides. Furthermore, the two-photon absorption coefficients of 1–3 layer PdSe2 (β ~ 4.16 × 105, 2.58 × 105, and 1.51 × 105 cm GW−1) are larger by two and three orders of magnitude than that of the conventional two-dimensional materials, and giant modulation depths (αs ~ 32%, 27%, and 24%) were obtained in 1–3 layer PdSe2. Such unique nonlinear optical characteristics make PdSe2 a potential candidate for technological innovations in nonlinear optoelectronic devices.

Suggested Citation

  • Juan Yu & Xiaofei Kuang & Junzi Li & Jiahong Zhong & Cheng Zeng & Lingkai Cao & Zongwen Liu & Zhouxiaosong Zeng & Ziyu Luo & Tingchao He & Anlian Pan & Yanping Liu, 2021. "Giant nonlinear optical activity in two-dimensional palladium diselenide," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21267-4
    DOI: 10.1038/s41467-021-21267-4
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    Cited by:

    1. Junting Liu & Fang Yang & Junpeng Lu & Shuai Ye & Haowen Guo & Hongkun Nie & Jialin Zhang & Jingliang He & Baitao Zhang & Zhenhua Ni, 2022. "High output mode-locked laser empowered by defect regulation in 2D Bi2O2Se saturable absorber," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Cheng-Yi Zhu & Zimeng Zhang & Jing-Kai Qin & Zi Wang & Cong Wang & Peng Miao & Yingjie Liu & Pei-Yu Huang & Yao Zhang & Ke Xu & Liang Zhen & Yang Chai & Cheng-Yan Xu, 2023. "Two-dimensional semiconducting SnP2Se6 with giant second-harmonic-generation for monolithic on-chip electronic-photonic integration," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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