[abstract]

 

In order to fabricate tandem solar cells by perovskite and silicon, 5-mm square-shaped silicon solar cells have been fabricated by a facile method.  Afterward, engineering of photonics for antireflection and electronics for extraction of the hole using a thin Au layer have been performed for two- and four-terminal tandem solar cells using CH3NH3Pb(I-Br)3 perovskite (top cell) and p-type single crystal silicon (c-Si) (bottom cell) by mechanically stacking.  Highly transparent connection multilayers of Au and ITO films were depositted at the interface to be a point-contact tunneling junction between the rough perovskite and flat silicon solar cells [1].  Moreover, we have analyzed the sputtering effect on spiro-OMeTAD HTM layer, which can deteriorated the photovoltaic effects of tandem devise significantly [2].  Also, the mechanically stacked tandem solar cells with several configurations as Fig. 1 were fabricated with MoOx and ITO interface layers [3].  In the conference, the detail results of optoelectronics phenomena about silicon and perovskite solar cells will be disclosed.