%0 Journal Article
%T High Fill Factors of Si Solar Cells Achieved by Using an Inverse Connection Between MOS and PN Junctions
%A Liang-Xing Wang
%A Ming Lu
%A Tian-Ning Zhang
%A Xin Chen
%A Zhi-Quan Zhou
%J Archive of "Nanoscale Research Letters".
%D 2016
%R 10.1186/s11671-016-1678-0
%X Fill factors (FFs) of ~0.87 have been obtained for crystalline Si (c-Si) solar cells based on Ag front contacts after rapid thermal annealing. The usual single PN junction model fails to explain the high FF result. A metal/oxide/semiconductor (MOS) junction at the emitter is found to be inversely connected to the PN one, and when its barrier height/e is close to the open-circuit voltage of the solar cell, very high FF is obtainable. In this work, although the open-circuit voltage (<580 mV) is not high here, the efficiency of c-Si solar cell still reaches the state-of-the-art value (>20 %) due to the high FF achieved
%K Si solar cell
%K Fill factor
%K Ag contact
%K MOS barrier
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5056919/