Journal of Electronic Science and Technology, Volume. 23, Issue 2, 100305(2025)
2D PdSe2: Pioneering innovations in polarized photodetection
Fig. 1. General synthesis techniques for PdSe2. (a) Schematic diagram of CVD setup for synthesizing the flakes of PdSe2. (b) Pentagonal crystal structure of PdSe2. (c) Raman spectra of PdSe2 to confirm the crystal structure of PdSe2. Reproduced with the permission from Ref. [19]. Copyright 2021, Wiley-VCH. (d) Schematic illustrations of 3 zones systems of CVD. (e) Photographs of achieved PdSe2 flakes with different number of layers. Reproduced with the permission from Ref. [20]. Copyright 2022, Springer Nature. (f) Schematic presentation of electrochemical intercalation reaction of bulk PdSe2 crystals. (g) Raman spectra of 7 nm-thick TBA-PaSe2 superlattice and 3 nm-thick pristine PaSe2. Reproduced with the permission from Ref. [21]. Copyright 2024, Wiley-VCH.
Fig. 2. Photophysical properties of PdSe2. (a) Graph of PdSe2 with different thickness. (b) Values of the optical bandgaps extracted from Fig. 2(a) with different layer numbers. Reproduced with the permission from Ref. [27]. Copyright 2019, Wiley-VCH. (c) Bandgap value of PdSe2 at 300 K. Reproduced with the permission from Ref. [28]. Copyright 2022, Wiley-VCH. (d) Polar plots depicting the peak intensities of the Ag mode as a function of the polarization angle in parallel configurations. (e) Polar plot illustrating the photocurrent of the device at a gate bias of 50 V and a wavelength of 532 nm, shown as a function of the polarization angle. Reproduced with the permission from Ref. [18]. Copyright 2019, Wiley-VCH. (f) Schematic diagram of device structure with 6 pair electrodes. (g) Output properties of PdSe2 based device at different angle. (h) Polar plot of angle depended on conductance. Reproduced with the permission from Ref. [32]. Copyright 2021, Wiley-VCH.
Fig. 3. Recent progress of photodetectors and their applications based on PdSe2. (a) Schematic diagram of polarized photodetection based on few-layer PdSe2. (b) Angle resolved photocurrent including in-line polarization plot based on few-layer PdSe2. Reproduced with the permission from Ref.[32]. Copyright 2021, Wiley-VCH. (c) Optical image of MoS2/PdSe2 vdWs heterostructure for polarization detection. (d) Comparison of polarization detection of MoS2/PdSe2 vdWs heterostructure with other 2D vdWs heterostructure technologies. Reproduced with the permission from Ref. [37]. Copyright 2024, Wiley-VCH. (e) Polarized time resolved photoresponse of the PdSe2/Te photodetector device at the wavelength of
|
Get Citation
Copy Citation Text
Waqas Ahmad, Amine El Moutaouakil, Wen Lei, Zhi-Ming Wang. 2D PdSe2: Pioneering innovations in polarized photodetection[J]. Journal of Electronic Science and Technology, 2025, 23(2): 100305
Category:
Received: Oct. 15, 2024
Accepted: Feb. 26, 2025
Published Online: Jun. 16, 2025
The Author Email: Ahmad Waqas (ahmawaqas2d@uestc.edu.cn), Wang Zhi-Ming (zhmwang@uestc.edu.cn)