Metal-assisted nano-textured solar cells with SiO2/Si3N4 passivation


Es F. , Baytemir G., Kulakci M., Turan R.

SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol.160, pp.269-274, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 160
  • Publication Date: 2017
  • Doi Number: 10.1016/j.solmat.2016.10.032
  • Title of Journal : SOLAR ENERGY MATERIALS AND SOLAR CELLS
  • Page Numbers: pp.269-274
  • Keywords: Metal-assisted etching, Texturing, Silicon solar cells, Nano-texture, BLACK-SILICON, RECOMBINATION, EFFICIENCY, THIN, SI

Abstract

We demonstrate the fabrication of nano-sized surface textured crystalline silicon by a metal-assisted electroless etching method with nitric acid added as the hole injection agent. This method generates randomly shaped cone-like structures that offer a clear advantage over nanowires by enabling straightforward passivation with standard techniques. Average reflection values as low as 3% have been achieved. Optimizing the thickness of anti-reflective coatings, the doping depth and the screen-printed metal firing process increases the short circuit current of the cell by 0.82 mA/cm(2) over the reference cells, which had a pyramidal texture without nano texturing.