Speirs M J, Groeneveld B G H M, Protesescu L, Piliego C, Kovalenko M V, Loi M A
Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen, 9747 AG, The Netherlands.
Phys Chem Chem Phys. 2014 May 7;16(17):7672-6. doi: 10.1039/c4cp00846d.
We report the first hybrid tandem solar cell with solution processable active layers using colloidal PbS quantum dots (QDs) as the front subcell in combination with a polymer-fullerene rear subcell. Al/WO3 is introduced as an interlayer, yielding an open circuit voltage (VOC) equal to about 92% of the sum of the VOC of the subcells. The device exhibits a power conversion efficiency of 1.8%. Optical simulations of various tandem configurations show that combining PbS QDs with small-bandgap polymers is a promising strategy to obtain tandem solar cells with a very broad absorption range and a high short circuit current.
我们报道了首个采用溶液可加工活性层的混合串联太阳能电池，其使用胶体硫化铅量子点（QDs）作为前子电池，并与聚合物 - 富勒烯后子电池相结合。引入Al/WO₃作为中间层，开路电压（VOC）约等于子电池VOC总和的92%。该器件的功率转换效率为1.8%。对各种串联结构的光学模拟表明，将硫化铅量子点与小带隙聚合物相结合是获得具有非常宽吸收范围和高短路电流的串联太阳能电池的一种有前景的策略。
