Light management studies by using different surface texturing for thin c-Si solar cells

To realize the high-efficiency solar cell, surface texturing method is one of the well-liked and potential way for the last few decades. Though different research groups have adopted several types of nanostructured anti-reflective geometries for front surface texturing of solar cell but till today which type of dimension will be fruitful to get maximum efficiency of the cell is yet to be exposed. In this work, we are trying to give a comparative study of different types of nanostructure geometries like circle, ellipse, trapezoidal and triangle (or cone) made by same material silicon and try to investigate their potential to give minimum reflectance for better cultivation of electron-hole pair into the junction of the cell. Through this study, it was validated that the triangle or cone structures have the competence to satisfy maximum criteria like low reflectance, Omni-directionality with better harvesting of electron-hole pair into the junction of the solar cell without compromising its material and processing cost. Further these types of structures (cone or triangle) have the potentiality to enhance the efficiency (more than 27% compared to other structures) of solar cell with noticeable increment of short-circuit current of the device. Finally, we fabricated the optimized nanotriangle (or nanocone) geometry through nanosphere lithography technique to realize the structure in real world and found the same optical occurrence which was already explored in our simulation studies.