Excellent ONO passivation on phosphorus and boron diffusion demonstrating a 25% efficient IBC solar cell

This work presents results of a laboratory-scale interdigitated back contact (IBC) solar cell with an independently measured efficiency of 25.0%, featuring open-circuit voltage of 716 mV, short-circuit current of 43.0 mA.cm−2 and fill factor of 81.0%. Notably, the high efficiency was achieved based on significant improvements resulting from the optimised cell structure, excellent SiO2-SiNx-SiOx (ONO) surface passivation, detailed bulk lifetime management strategy and improved random pyramid texturing. Experimental details and analysis of the individual improvements over prior work are presented in-depth.

PV Lighthouse, Australian National University (ANU), University of Tasmania

Teng Choon Kho and Kean Chern Fong and Matthew Stocks and Keith McIntosh and Evan Franklin and Sieu Pheng Phang and Wensheng Liang and Andrew Blakers

Progress in Photovoltaics: Research and Applications

IBC,ONO,corona charge,gettering,high efficiency,surface passivation

2020

10

10.1002/pip.3310

1062-7995

10

1034-1044

John Wiley and Sons Ltd

28