Electronic transport in biphenylene network monolayer: Proposals for 2D multifunctional carbon-based nanodevices

Nonvolatile Electrical Control and Reversible Gas Capture by Ferroelectric Polarization Switching in 2D FeI2/In2S3 van der Waals Heterostructures

“…Note that gas sensitivity is highly correlated with resistivity changes, and it can be assessed on the basis of the I− V relationship. 62 In Figure 7(b), when NH 3 is physically absorbed on the FeI 2 /In 2 S 3 -P ↑ surface, the system with adsorbing NH 3 shows no significant variation in current compared to the original FeI 2 /In 2 S 3 -P ↑ (see Figure 4(c)) due to the lower charge transfer. Actually, the induced current before and after adsorption of NH 3 remained almost unchanged under the application of the same magnitude of bias voltages.…”

“…Based on the proposed FeI 2 /In 2 S 3 multiferroic heterostructure, the proof-of-concept of nonvolatile memory devices is proposed, in which two states (“1” and “0”) are achieved by switching the polarization direction of the ferroelectric layer, as shown in Figures (a) and (b). The two-probe structure consists of the source and drain electrodes, indicated by the blue shaded area, between which is the central scattering region. − The I–V curves of the designed multiferroic device at two different In 2 S 3 polarization states ( P ↑ and P ↓ ) are presented in Figure (c). It is remarkable that the multiferroic device shows a significant valving effect with an on–off ratio of 3846 and that the magnitude of the current can reach the order of μA in the on state.…”

“…Therefore, the gas sensor device based on the FeI 2 /In 2 S 3 heterostructure is constructed, and its operating schematic is shown in Figure (a). Note that gas sensitivity is highly correlated with resistivity changes, and it can be assessed on the basis of the I–V relationship . In Figure (b), when NH 3 is physically absorbed on the FeI 2 /In 2 S 3 - P ↑ surface, the system with adsorbing NH 3 shows no significant variation in current compared to the original FeI 2 /In 2 S 3 - P ↑ (see Figure (c)) due to the lower charge transfer.…”

Perylene-based molecular device: multifunctional spintronic and spin caloritronic applications

“…8 Subsequently, organic molecular spintronics combining spintronics and molecular electronics offer new possibilities for solving the miniaturization of electronic devices. [9][10][11] Theoretical research indicated that utilizing single or several molecules to construct molecular spintronic devices can gain many interesting and novel transport properties, e.g., spin filtering effect (SFE), 12,13 spin valve, 13 spin rectification, 14 spin switch, 15 negative differential resistance (NDR), 12,16 strong odd-even oscillatory characteristic, 17 and magnetoresistance (MR). 12,13,18 Many functional single molecule devices including molecular wires, molecular switches, molecular rectifiers, molecular transistors and sensors have been realized.…”

High gas sensing performance of inorganic and organic molecule sensing devices based on the BC3N2 monolayer

“…[24][25][26][27] In addition to graphene, a number of other 2D materials have been studied to adsorb small molecules of organic and inorganic gases to construct gas sensors. 28,29 Typically anisotropic atom-thin b 12 borophene with gas sensing properties superimposed on an MoS 2 substrate and w 3 borophene superimposed on a WSe 2 substrate were used for detecting inorganic small molecules. 20 Furthermore, a gas sensing device with a borophene/MoS 2 -based heterojunction structure has been theoretically designed to explore its sensing performance for organic molecules.…”