Efficiency Of Thin Film Solar Cells

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KillaKem
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How does the efficiency of a Thin Film solar cell compare to the efficiency of a single crystal solar cell with reference to the 5 main solar cell parameters ( Iopt , Rs, Rsh, Is and n )?

I know series resistance( Rs ) will probably increase in thin film cells because of grain boundaries which will cause increased recombination and I think the shunt resistance will probably reduce because there are many layers to be deposited in a thin film so there is increased risk of manufacturing defects, is this right?

How are the other parameters affected? Do they remain unchanged?
 
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There are several chemistries for thin film solar. So you can't ask those questions without specifying which.

But this reference may help you.

Sahay, Amit; Sethi, V.K.; Tiwari, A.C. (July 7, 2013). "A COMPARATIVE STUDY OF ATTRIBUTES OF THIN FILM AND CRYSTALLINE PHOTOVOLTAIC CELLS". assets.fiercemarkets.com/. VSRD International Journal of Mechanical, Civil, Automobile and Production Engineering, Vol. 3 No. July 7, 2013 / 267, VSRD International Journals: www.vsrdjournals.com. pp. 3–4. Archived from http://assets.fiercemarkets.com/public/sites/energy/reports/pvthinfilmreport.pdf (PDF) on September 20, 2014. Retrieved September 20, 2014. e-ISSN 2249-8303, p-ISSN 2319-2208