Ferromagnetic CoSe broadband photodetector at room temperature

Fang, Liang; Wang, Chaolun; Luo, Chen; Xia, Yin; Wang, Yang; Xu, Mengjian; Wang, Hailu; Wang, Teng; Zhu, Yicheng; Wu, Peng; Ye, Jiafu; Mu, Gang; Zhu, He; Wu, Xing

doi:10.1088/1361-6528/ab9867

Cited by 16 publications

(11 citation statements)

References 80 publications

(89 reference statements)

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“…Ultrathin 2D layered materials are easy to obtain and bandgaps are easy to control benefiting from the unique structure of weak van der Waals forces bonded in interlayers, resulting in great application potential in microelectronics and optoelectronics fields [8,[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. However, 2D non-layered materials with a broad range of properties have rarely been reported in recent years [31][32][33][34]. The essential reason is that it is difficult to obtain ultrathin 2D nonlayered materials with the crystal structure of all atoms bonded by isotropic chemical bonds.…”

Section: Introductionmentioning

confidence: 99%

CVD-Grown 2D Nonlayered NiSe as a Broadband Photodetector

et al. 2021

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Two-dimensional (2D) materials have expansive application prospects in electronics and optoelectronics devices due to their unique physical and chemical properties. 2D layered materials are easy to prepare due to the layered crystal structure and the interlayer van der Waals combination. However, the 2D nonlayered materials are difficult to prepare due to the nonlayered crystal structure and the combination of interlayer isotropic chemical bonds, resulting in limited research on 2D nonlayered materials with broad characteristics. Here, a 2D nonlayered NiSe material has been synthesized by a chemical vapor deposition method. The atomic force microscopy study shows that the grown NiSe with a thin thickness. Energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy results demonstrate the uniformity and high quality of NiSe flakes. The NiSe based photodetector realizes the laser response to 830 nm and 10.6 μm and the maximum responsivity is ~6.96 A/W at room temperature. This work lays the foundation for the preparation of 2D nonlayered materials and expands the application of 2D nonlayered materials in optoelectronics fields.

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Section: Introductionmentioning

confidence: 99%

CVD-Grown 2D Nonlayered NiSe as a Broadband Photodetector

et al. 2021

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“…However, the M s value for Co x S y -700 reaches 14.2 A m 2 kg À1 , superior to that of the pristine CoSe. [10,11,14] It implies that structural phase transformation, is not the main reason for the significant magnetic enhancement of Co x S y after annealing. Based on the spectroscopic information of the Co x S y series samples, with an increase in annealing temperature, magnetic enhancement is accompanied by the oxygen incorporation.…”

Section: Resultsmentioning

confidence: 99%

“…Among TMDCs, cobalt selenides, as an important half metal material, have gained considerable attention in several decades. [10][11][12][13][14] Herein, most of the cobalt ions for cobalt selenides endow with 3d orbitals occupied by unpaired electrons, and embody intrinsic magnetic moment. Due to the multiple valence states of cobalt ions and variable crystal phases of cobalt selenides, their magnetic properties can be easily manipulated.…”

Section: Introductionmentioning

confidence: 99%

Orbital Hybridization Induced by Double‐Anion Coordination to Enhance Room‐Temperature Ferromagnetic Response

Liu

Guo

et al. 2022

Physica Rapid Research Ltrs

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The oxygen introduction is expected to enable manipulation of material properties, however, the coordination mechanism between oxygen and other nonmetal dopants remains inadequate. Herein, the oxygen introduction into cobalt selenides has been achieved through annealing in a controlled gas environment to disclose the anion defects formation process. Superconducting quantum interference device (SQUID) measurements indicate that the cobalt selenides annealed exhibit significantly enhanced room‐temperature ferromagnetism. Calculations reveal that the magnetic improvement is mainly attributed to orbital hybridization induced by double‐anion coordination (selenium and oxygen). This work can provide new insight into the role of oxygen incorporation in magnetic structure transformation.

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“…Liang et al [ 51 ] studied the photodetector based on air‐stable 2D ferromagnetic material CoSe at room temperature, with the photoresponse ranges from 450 nm to 10.6 μm. The photoresponsivity is up to 2.58 A W −1 under the 10.6 μm illumination at room temperature.…”

Section: D Materials For Ir Detectionmentioning

confidence: 99%

2D Material‐Based Photodetectors for Infrared Imaging

2021

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As a dynamic research field, infrared (IR) detection and imaging presents broad prospect in spectra‐chemistry, biomedicine, and artificial intelligence. Due to the excellent properties, 2D materials are expected to overcome the serious manufacturing cost and integration problems of Si‐based photodetectors, providing opportunities for the universal application of IR imaging. Up to now, dozens of 2D materials are used to manufacture IR photodetectors. The ultrathin and flexible 2D material‐based optoelectronic devices, which are easy to machine and integrate, will demonstrate the application beyond imagination. In this review, first, the principle of IR detection and imaging is introduced, in which the single pixel and array imaging are discussed. Then the promising materials, toward broadband detection and special detection, are introduced in brief and the devices for imaging are summarized, including the mode based on light intensity and the strategy originated from polarization. Finally, it is prospected that the 2D materials have the capability to show the integral IR world, which contains large amount of valuable information such as molecular vibration spectra and significant applications such as artificial retina.

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Ferromagnetic CoSe broadband photodetector at room temperature

Cited by 16 publications

References 80 publications

CVD-Grown 2D Nonlayered NiSe as a Broadband Photodetector

CVD-Grown 2D Nonlayered NiSe as a Broadband Photodetector

Orbital Hybridization Induced by Double‐Anion Coordination to Enhance Room‐Temperature Ferromagnetic Response

2D Material‐Based Photodetectors for Infrared Imaging

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