In Choi1,Bonkee Koo1,Min Jae Ko1
Hanyang University1
In Choi1,Bonkee Koo1,Min Jae Ko1
Hanyang University1
Organic-inorganic hybrid perovskite solar cells (PSCs) are expected to become future renewable energy sources among the emerging photovoltaics. Perovskite materials are very promising for the tandem solar cells due to the largely tunable band gap energy (E<sub>g</sub>). Recently, PSCs based multijunction solar cells are intensively and extensively investigated to achieve higher performance over silicon solar cells. For the fabrication of tandem, conventional vacuum deposition methods have been widely used even though the high-cost and their applications to fabricate multijunction solar cells. However, to realize the simple process to reduce total fabrication cost, simple fabrication process is highly required. Here, we developed a transparent conductive adhesive (TCA) based lamination method for the fabrication of the multijunction solar cell, which is comfortable and cost-effective method. Based on low-temperature and low-pressure lamination conditions, we achieved over 2.2 V open-circuit voltage and 11.16 % power conversion efficiency in perovskite/perovskite/silicon triple-junction solar cells. The TCA lamination method developed through this study is expected to present a new horizon in future research and industrialization of multijunction solar cells.