Efficiency improvement of solar cells by importing microdome-shaped anti-reflective structures as a surface protection layer

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>A novel dome-shaped and anti-reflective microdome array (MDA) was developed for a solar cell surface protection layer with the aim to improve the cell efficiency. Uniform microdomes in the array were obtained by isotropic wet-etching of quartz. The microdome patterns on the quartz plate were transferred to a polymer via 2 replica molding processes in order to fabricate a flexible MDA. When light passes through the developed microstructure array, the anti-reflective MDAs exhibited a higher transmittance and a lower reflectance when compared to their counterparts, bare planar layers. During the electrical testing of the GaAs solar cells under an illumination of air mass (A.M) 1.5, the cells covered by these MDAs showed a greatly increased current density (<I>J</I> <SUB>sc</SUB>) of up to 5.2%. The power conversion efficiency (PCE) was also remarkably increased up to 3.5%, when the MDA structure was utilized as the solar cell surface protection layer.</P>