First-principles study of vanadium-based Half-Heusler compounds: structural, electronic, optical, and thermomechanical properties for optoelectronics.

48 Meanwhile, the imaginary part of the optical conductivity initially shows a decreasing trend with rising photon energy, reflecting reduced energy storage capabilities in the medium.

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5(b) , both the real part ( ε 1 ) and imaginary part ( ε 2 ) of the dielectric function exhibit an increasing trend in the low-energy region as the photon energy rises. 48 However, as the energy reaches the visible region (VR), the real part ε 1 begins to decrease, while the imaginary part ε 2 shows a similar decreasing behavior in the ultraviolet region (UR).

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