Raman Investigation, Second Harmonic Generation, and Ultrasensitive Photoresponse of Low Symmetry Transition Metal Halide PdBr<sub>2</sub>

Zhu, Wanli; Zhen, Weili; Niu, Rui; Jiao, Keke; Zhang, Ranran; Zhang, Lei; Xue, Fei; Zhang, Changjin

doi:10.1021/acsphotonics.3c01352

Cited by 1 publication

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References 60 publications

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“…The intersection occurs at a wavelength of 397 nm, referring as the reversal point. It should be noted that similar optical reversal phenomenon has also been reported in other low-dimensional materials such as PdSe 2 , [43] SiP, [44] Ni 2 Pd 3 Se 8 , [45] etc. In Fig.…”

Section: Comparisons Of Two Kinds Of Dichroism Ratio Modes (Red Linesupporting

confidence: 82%

Linear dichroism transition and polarization-sensitive photodetector of quasi-one-dimensional palladium bromide

Zhu 朱,

Zhen 甄,

Niu 牛

et al. 2024

Chinese Phys. B

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Perpendicular optical reversal of the linear dichroism transition has promising applications in polarization sensitive optoelectronic devices. We perform a systematical study on the in-plane optical anisotropy of quasi one-dimensional PdBr2 by using combined measurements of the angle resolved polarized Raman spectroscopy (ARPRS) and anisotropic optical absorption spectrum. The analyses of ARPRS data validate the anisotropic Raman properties of the PdBr2 flake. And anisotropic optical absorption spectrum of PdBr2 nanoflake demonstrates distinct optical linear dichroism reversal. Photodetector constructed by PdBr2 nanowire exhibits high responsivity of 747 A W-1 and specific detectivity of 5.8×1012 Jones. And the photodetector demonstrates prominent polarization-sensitive photoresponsivity under 405 nm light irradiation with large photocurrent anisotropy ratio of 1.56, which is superior to those of most of previously reported quasi one-dimensional counterparts. Our study offers fundamental insights into the strong optical anisotropy exhibited by PdBr2, establishing it as a promising candidate for miniaturization and integration trends of polarization-related applications.

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Section: Comparisons Of Two Kinds Of Dichroism Ratio Modes (Red Linesupporting

confidence: 82%

Linear dichroism transition and polarization-sensitive photodetector of quasi-one-dimensional palladium bromide

Zhu 朱,

Zhen 甄,

Niu 牛

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

Raman Investigation, Second Harmonic Generation, and Ultrasensitive Photoresponse of Low Symmetry Transition Metal Halide PdBr₂

Cited by 1 publication

References 60 publications

Linear dichroism transition and polarization-sensitive photodetector of quasi-one-dimensional palladium bromide

Linear dichroism transition and polarization-sensitive photodetector of quasi-one-dimensional palladium bromide

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Raman Investigation, Second Harmonic Generation, and Ultrasensitive Photoresponse of Low Symmetry Transition Metal Halide PdBr2

Cited by 1 publication

References 60 publications

Linear dichroism transition and polarization-sensitive photodetector of quasi-one-dimensional palladium bromide

Linear dichroism transition and polarization-sensitive photodetector of quasi-one-dimensional palladium bromide

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Raman Investigation, Second Harmonic Generation, and Ultrasensitive Photoresponse of Low Symmetry Transition Metal Halide PdBr₂