Ozone Base Cleaning: Impact on High Efficiency Interdigitated Back Contact Solar Cells

2014 ◽  
Vol 219 ◽  
pp. 312-316
Author(s):  
B.J. O’Sullivan ◽  
M. Haslinger ◽  
S. Singh ◽  
T. Bearda ◽  
Maarten Debucquoy ◽  
...  

Interdigitated back contacted (IBC) silicon solar cells have long been shown as high conversion efficiency solar cells, with values as high as 25.0% reported by Sunpower [1]. Such high efficiencies are enabled by the cell structure, with the absence of front side metal shading, which can then be optimised from optical and passivation perspectives. High bulk lifetime silicon and a low series resistance metallisation scheme can also enhance the efficiencies. Other advantages include the easier module incorporation given both metal contacts are located on the rear of the cell.

2010 ◽  
Author(s):  
Robert Woehl ◽  
Marc Rüdiger ◽  
Denis Erath ◽  
David Stüwe ◽  
Ralf Preu ◽  
...  

2010 ◽  
Vol 31 (6) ◽  
pp. 576-578 ◽  
Author(s):  
Chun Gong ◽  
Emmanuel Van Kerschaver ◽  
Jo Robbelein ◽  
Tom Janssens ◽  
Niels Posthuma ◽  
...  

2008 ◽  
Vol 1101 ◽  
Author(s):  
Thomas Soderstrom ◽  
Franz-Joseph Haug ◽  
Xavier Niquille ◽  
Oscar Cubero ◽  
Stéphanie Perregaux ◽  
...  

AbstractIn the nip or substrate configuration thin film silicon solar cells, the choice of front TCO contact is critical because there is a trade off between its transparency which influences the current in the solar cell and its conductivity which influences the series resistance. Here, we investigate the optical behavior of two different TCO front contacts, either a 70 nm thick, nominally flat ITO or a 2 μm thick rough LPCVD ZnO. The back contact consists of LP-CVD ZnO with random texture. First we investigate the influence of the rough and flat front TCOs in μc-Si:H and a-Si:H solar cells. With the back contact geometries used in this work, the antireflection properties of ITO are effective at providing as much light trapping as the rough LP-CVD ZnO. In the second part, we demonstrate that total of 25 to 26 mA/cm2is achievable in nip micromorph tandem cells and show short circuit current up to 11.7 mA/cm2 using an SIO based intermediate reflector.


2012 ◽  
Vol 106 ◽  
pp. 37-41 ◽  
Author(s):  
Pierre J. Verlinden ◽  
Monica Aleman ◽  
Niels Posthuma ◽  
Jara Fernandez ◽  
Bartek Pawlak ◽  
...  

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