Gettering of transition metals by porous silicon in epitaxial silicon solar cells

2012 ◽  
Vol 209 (10) ◽  
pp. 1866-1871 ◽  
Author(s):  
Hariharsudan Sivaramakrishnan Radhakrishnan ◽  
Chihak Ahn ◽  
Jan Van Hoeymissen ◽  
Frédéric Dross ◽  
Nick Cowern ◽  
...  
Keyword(s):  
Solar Cells ◽  
Porous Silicon ◽  
Transition Metals ◽  
Silicon Solar Cells ◽  
Epitaxial Silicon

Plasma Texturing and Porous Silicon Mirrors for Epitaxial Thin Film Crystalline Silicon Solar Cells

2008 ◽  
Vol 1101 ◽  
Author(s):  
Izabela Jozefa Kuzma-Filipek ◽  
Filip Duerinckx ◽  
Kris Van Nieuwenhuysen ◽  
Guy Beaucarne ◽  
Jef Poortmans
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Porous Silicon ◽  
Crystalline Silicon ◽  
Internal Reflection ◽  
Electrochemical Anodization ◽  
Silicon Solar Cells ◽  
Textured Surface ◽  
Epitaxial Silicon ◽  
Substrate Interface

AbstractThin film silicon solar cells, consisting of an epitaxially grown active layer on a low quality highly doped silicon substrate, incorporate many attractive features usually associated with their sister cells based on bulk silicon. However, the efficiency of the current epitaxial semi-industrial screen printed cells is limited to 11-12% mainly due to optical shortcomings. This paper will give an overview of our work aimed at tackling the 2 most important problems: (i) Finding and implementing an adequate front surface texture and (ii) the simulation, fabrication and incorporation of an intermediate reflector.The former issue has been addressed by the development of plasma texturing based on halogen species. This method allows us to fulfil the sometimes contradictory requirements for the textured surface, i.e. a uniform and reduced reflection, a strong lambertian character to scatter the light and a limited removal of silicon. It will be shown that the scattering efficiency is dependent on both the wavelength of the impinging light and on the silicon removal during the texturing process.The second and main issue of this work is the limited absorption volume of the epitaxial layer. To resolve this drawback, an intermediate reflector is placed at the epi/substrate interface to enhance the path length of the low energy photons through the epi-layer. In practice, a multi-layer porous silicon stack is created by electrochemical anodization of the substrate. The reflection at the epi/reflector/substrate interface is a combination of several different effects including a Bragg mirror and Total Internal Reflection (TIR). Measurements of the external reflectance as well as extraction of the internal reflection parameters are used to clarify the issue. Advanced structures, including chirped porous silicon stacks, are introduced. Finally, the benefits of the reflector on the level of the epitaxial silicon solar cell are analysed. Efficiencies close to 14% are obtained for epitaxial cells incorporating an advanced porous Si reflector.

A porous silicon intermediate reflector in thin film epitaxial silicon solar cells as a gettering site of impurities

2009 ◽  
Vol 6 (7) ◽  
pp. 1745-1749 ◽  
Author(s):  
Izabela Kuzma-Filipek ◽  
Filip Duerinckx ◽  
Kris Van Nieuwenhuysen ◽  
Guy Beaucarne ◽  
Jef Poortmans ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Porous Silicon ◽  
Silicon Solar Cells ◽  
Epitaxial Silicon

Simulation and implementation of a porous silicon reflector for epitaxial silicon solar cells

2008 ◽  
Vol 16 (5) ◽  
pp. 399-407 ◽  
Author(s):  
Filip Duerinckx ◽  
Izabela Kuzma-Filipek ◽  
Kris Van Nieuwenhuysen ◽  
Guy Beaucarne ◽  
Jef Poortmans
Keyword(s):  
Solar Cells ◽  
Porous Silicon ◽  
Silicon Solar Cells ◽  
Epitaxial Silicon

scholarly journals Efficiency (>15%) for thin-film epitaxial silicon solar cells on 70 cm2 area offspec silicon substrate using porous silicon segmented mirrors

2010 ◽  
Vol 18 (2) ◽  
pp. 137-143 ◽  
Author(s):  
I. Kuzma-Filipek ◽  
K.V. Nieuwenhuysen ◽  
J.V. Hoeymissen ◽  
M.R. Payo ◽  
E.V. Kerschaver ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Porous Silicon ◽  
Silicon Substrate ◽  
Silicon Solar Cells ◽  
Epitaxial Silicon

Chirped porous silicon reflectors for thin-film epitaxial silicon solar cells

2008 ◽  
Vol 104 (7) ◽  
pp. 073529 ◽  
Author(s):  
Izabela J. Kuzma-Filipek ◽  
Filip Duerinckx ◽  
Emmanuel Van Kerschaver ◽  
Kris Van Nieuwenhuysen ◽  
Guy Beaucarne ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Porous Silicon ◽  
Silicon Solar Cells ◽  
Epitaxial Silicon

Enhancement of efficiency in graphene/porous silicon solar cells by co-doping graphene with gold nanoparticles and bis(trifluoromethanesulfonyl)-amide

2017 ◽  
Vol 5 (35) ◽  
pp. 9005-9011 ◽  
Author(s):  
Ju Hwan Kim ◽  
Dong Hee Shin ◽  
Ha Seung Lee ◽  
Chan Wook Jang ◽  
Jong Min Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Solar Cells ◽  
Porous Silicon ◽  
Au Nanoparticles ◽  
Silicon Solar Cells ◽  
Porous Si ◽  
Co Doping ◽  
Si Solar Cells ◽  
First Time

The co-doping of graphene with Au nanoparticles and bis(trifluoromethanesulfonyl)-amide is employed for the first time to enhance the performance of graphene/porous Si solar cells.

Fabrication of buried contact silicon solar cells using porous silicon

2009 ◽  
Vol 93 (3) ◽  
pp. 297-300 ◽  
Author(s):  
P. Vitanov ◽  
E. Goranova ◽  
V. Stavrov ◽  
P. Ivanov ◽  
P.K. Singh
Keyword(s):  
Solar Cells ◽  
Porous Silicon ◽  
Silicon Solar Cells
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