Investigation of nano-porous silicon antireflection coatings for crystalline silicon solar cells

Author

Lee, Hyunwoo ; Lee, Eunjoo ; Lee, Soohong

Author_Institution

Sejong Univ., Seoul

Volume

1

fYear

2006

fDate

22-25 Oct. 2006

Firstpage

340

Lastpage

341

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/NMDC.2006.4388757

Filename

4388757