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The exploration of new monolayer materials always attracts much attention due to the extraordinary properties and promising applications. Here we predict two monolayered aluminum triphosphides (AlP3) with C2/m and P3m1 space groups with a tunable bandgap under strain as the new members of the two-dimensional XP3 family by using the first principles calculations. The stabilities of the predicted structures are confirmed with the phonon dispersion curves and molecular dynamics. Unlike the narrow bandgaps of the reported XP3 monolayers, the larger bandgaps of 1.78 (HSE06) or 1.91 eV (G0W0) for C2/m and 1.42 (HSE06) or 2.14 eV (G0W0) for P3m1 AlP3 monolayers are observed. The high mobility of 1.01105 and 1.62104 cm2 V-1 s-1 are observed for the electron of P3m1 and the hole of C2/m. The optical absorptions of the AlP3 monolayers, in particular, the one with C2/m, are obviously strong in the visible light range. These results imply that the monolayers are promising in the optoelectronic application. Unfortunately, the undesirable band edges make them not suitable for water splitting in spite of the strong optical absorption coefficient in the visible light range. However, an obvious effect of strain engineering is demonstrated for the monolayers. Under -2% and - 3% biaxial strain, the band edges of P3m1 AlP3 can straddle the redox potential of water and meet the requirement of photocatalytic water splitting. Therefore, the P3m1 AlP3 monolayer can also be a promising candidate for the photocatalytic water splitting to produce hydrogen driven by the visible light.
This article was published in the following journal.
Name: Journal of physics. Condensed matter : an Institute of Physics journal
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Tunable liquid lasers with organic compounds (i.e., dye) which have a strong absorption band, used as the active medium. During emission, the dye has to be optically excited by another light source (e.g., another laser or flash lamp). The range of the emission wavelength may be anywhere from the ultraviolet to the near infrared (i.e., from 180 to 1100nm). These lasers are operated in continuous wave and pulsed modes. (UMDNS, 2005)
Echocardiography amplified by the addition of depth to the conventional two-dimensional ECHOCARDIOGRAPHY visualizing only the length and width of the heart. Three-dimensional ultrasound imaging was first described in 1961 but its application to echocardiography did not take place until 1974. (Mayo Clin Proc 1993;68:221-40)
An electrophoretic technique for assaying the binding of one compound to another. Typically one compound is labeled to follow its mobility during electrophoresis. If the labeled compound is bound by the other compound, then the mobility of the labeled compound through the electrophoretic medium will be retarded.
An enzyme of long-chain fatty acid synthesis, that adds a two-carbon unit from malonyl-(acyl carrier protein) to another molecule of fatty acyl-(acyl carrier protein), giving a beta-ketoacyl-(acyl carrier protein) with the release of carbon dioxide. EC 22.214.171.124.
The upward or downward mobility in an occupation or the change from one occupation to another.