Title :
Investigation of nano-porous silicon antireflection coatings for crystalline silicon solar cells
Author :
Lee, Hyunwoo ; Lee, Eunjoo ; Lee, Soohong
Author_Institution :
Sejong Univ., Seoul
Abstract :
Reflectance loss of crystalline Si causes low efficiency. The optical loss can reduce by antireflection coatings (AR coatings). The porous silicon (PSi) formed by anodization is well known as using good ARC because PSi can be obtained easily and economically. So, we investigated PSi as AR coating for silicon solar cells. The nano-PSi was obtained by electrochemical etching and has reflectance less than 20% in wavelength for 450-1000 nm. The porosity is about 60% and refractive index is 1.7. The obtained results point out that it would be possible to apply a Si solar cell by the proposed simple technology.
Keywords :
anodisation; antireflection coatings; etching; nanoporous materials; porosity; reflectivity; silicon; solar cells; Si; Si - Element; Si solar cell; anodization; crystalline silicon solar cells; electrochemical etching; nanoporous silicon antireflection coatings; optical loss; porosity; reflectance loss; refractive index; wavelength 450 nm to 1000 nm; Coatings; Crystallization; Etching; Optical losses; Optical refraction; Optical variables control; Photovoltaic cells; Reflectivity; Refractive index; Silicon; antireflection coatings (ARC); porous silicon (PSi); solar cells;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0541-1
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388757
