7 June 2018 Enhanced absorption in monolithic perovskite/CuInGaSe2 tandem solar cells with double surface-engineered nanostructures
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Abstract
The development of perovskite solar cells has approached the theoretical efficiency limitation for single junction device geometry. To break this single junction efficiency limitation, it is highly desirable to construct a tandem structure in which the high bandgap perovskite is stacked with a current commercial prevailing low bandgap CuInGaSe2 (CIGS) solar cell. Improving the bottom CIGS subcell absorption with a reduced thickness for photocurrent matching holds the key to developing a high-performance perovskite/CIGS tandem device and reducing the overall manufacturing cost. We propose a monolithic perovskite/CIGS tandem solar cell integrated with optimized nanophotonic structures: dielectric nanocones on the top surface and Ag nanoparticles at the rear surface. Significant light absorption enhancement as large as 12.5% is achieved with a reduced bottom cell thickness by 58.7% through simulation. This approach opens up a viable pathway for achieving high-performance and cost-effective perovskite/CIGS tandem solar cells.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Boyuan Cai, Huahua Wang, Jiandong Fan, Yaohua Mai, Xiao-Cong Yuan, "Enhanced absorption in monolithic perovskite/CuInGaSe2 tandem solar cells with double surface-engineered nanostructures," Journal of Photonics for Energy 8(2), 024501 (7 June 2018). https://doi.org/10.1117/1.JPE.8.024501 . Submission: Received: 21 March 2018; Accepted: 22 May 2018
Received: 21 March 2018; Accepted: 22 May 2018; Published: 7 June 2018
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