Enhanced absorption of solar energy in elliptical GaAs nanowire array solar cells

An Optimized Structure for Enhancing Optical Absorption of Solar Energy in Elliptical GaAs Nanowire Array Solar Cell

“…Various recent investigations in terms of simulation and experimental studies have demonstrated that with well-defined diameter and length, NWAs exhibit very high absorption spectra than the thin film with almost similar thickness (Wen et al 2011;Li et al 2009;Zhu et al 2008;Hu and Chen 2007;Garnett and Yang 2010;Kupec et al 2010;Kelzenberg et al 2010;Sakib and Ahad 2015;Gu et al 2011). Due to optical resonances and diffraction, various nanowire array solar cells can demonstrate inherent light trapping as well as absorption enhancement properties (Ghahfarokhi et al 2016).…”

“…In order to compute the energy-dependent transmission T(E), absorption spectra A(E), and reflection R(E), time domain methods are widely used. Before going into the analysis, first, we have presented the design of this solar cell which is shown in Figure 1 (Sakib and Ahad 2015). In this structure, the key parameters are, L (length of the nanowires), T (thickness of the substrate), P (periodicity), D (major axis length of the ellipse), and d (minor axis length of the ellipse).…”