Unveiling the Electric-Current-Limiting and Photodetection Effect in Two-Dimensional Hydrogenated Borophene

Abstract

The electronic transport and photoelectric properties of hydrogenated borophene B4H4, which was realized in a recent experiment by Nishino, et al. [J. Am. Chem. Soc. 139, 13761 (2017)], are systematically investigated using the density functional theory and non-equilibrium Green's function methods. We find that B4H4 exhibits a perfect current-limiting effect and has high (along the zigzag direction) and low (along the armchair one) optional levels due to its strong electrical anisotropy. Moreover, B4H4 can generate sizable photocurrents under illumination, with strong photoelectronic response to blue/green light along the zigzag/armchair direction. Our work demonstrates that B4H4 is promising for the applications of current limiter and photodetectors. 

Nanodevices engineering and spin transport properties of MnBi2Te4 monolayer

“…Besides, both the energy dispersions and effective mass become anisotropic away from Γ point, such as between the x-axis (along zigzag direction) and y-axis (along armchair direction) shown in Fig. 1a, which should lead to anisotropic transport properties along these two directions like many other 2D materials 6,[38][39][40] . Note that the bandgap becomes smaller (see Supplementary Fig.…”

“…3 and 4) to its Z-type diode. The current along the A direction is slightly smaller than that along the Z direction due to larger carrier effective mass along A direction, implying its weak anisotropy ratio (1.3) 40 .…”

“…4e displays the transfer characteristics of the Z-type pin-junction FET of MBT-ML at the reverse (S-D) biases of 0.55 (in the year of 2024), 0.45 (in the year of 2027), and 0.40 V (in the year of 2030), respectively. All of their current densities increase monotonically as the gate voltage increases, and achieve the off-state at V g = 0.5 V. The corresponding on/off ratios at room temperature for HP (LP) are 24 (16), 43 (28), and 61 (40), respectively. The on/off ratios remain constant up to 400 K (Fig.…”

Fabrication of Hydrogen Boride Thin Film by Ion Exchange in MgB2

“…Previous experiments have shown that hydrogen boride sheets have a high H 2 content (8.5 wt %) [2], unique electronic properties [3,4], solid acid catalytic properties [5,6], photoinduced hydrogen release capability [7], and a unique ability to reduce metal ions to form nanocomposites [8][9][10]. In addition, theoretical models and computer simulations demonstrate that borophane is a promising candidate for applications such as anode material, alcohol gas sensors, current limiters, and photodetectors [11][12][13][14].…”

Negative differential resistance effect of blue phosphorene-graphene heterostructure device

“…Although GSJ can make graphene to be gapless, it still has a great demand to have alternative 2D semiconductors having both high mobility and finite band gap for the applications of electronics. Blue phosphorus (BlueP) and black phosphorus [15][16][17][18][19][20][21][22][23], which have both ultra-high mobility and finite band gap (2.0 eV and 0.5 eV, respectively), can satisfy the above mentioned properties [24]. Theoretical computations with external stimuli such as application of an electric field and surface functionalization [25] on the electronic properties of BlueP have also been conducted to explore the effects of doping [26][27][28][29].…”