研究目的
Investigating the efficiency losses and proposing optimization schemes for perovskite/silicon monolithic tandem solar cells under real solar spectra at different times and latitudes.
研究成果
The study successfully analyzes the efficiency losses of perovskite/silicon monolithic TSCs under real solar spectra and proposes optimization schemes. It finds that the relative efficiency loss can be reduced to near 0% at oblique incidence with a quasi-omnidirectional pyramid textured front surface and the best perovskite layer thickness. The study also calculates the annual energy output and optimized ΔJSC for different latitudes, providing a practical guidance for the design of perovskite/silicon monolithic TSCs.
研究不足
The study focuses on clear-sky conditions and does not account for clouds and diffuse light. The simulated absorptance spectra are used as a substitute for EQE spectra, which may introduce some differences.
1：Experimental Design and Method Selection:
The study combines experiment and simulation to analyze the efficiency losses of perovskite/silicon monolithic TSCs under real solar spectra. It employs the finite-difference time-domain (FDTD) method for optical calculations.
2：Sample Selection and Data Sources:
The study uses real perovskite/silicon monolithic TSCs and simulated solar spectra under clear-sky conditions at different dates and sidereal times obtained from PVlighthouse.com.
3：List of Experimental Equipment and Materials:
The study involves silicon heterojunction and perovskite solar cells, with detailed structures and materials specified.
4：Experimental Procedures and Operational Workflow:
The study measures the EQE spectra of both silicon heterojunction and perovskite solar cells by varying incident angle θ and performs optical calculations using FDTD simulations.
5：Data Analysis Methods:
The study calculates JSC, VOC, and efficiency η based on the solar spectra and the EQE spectra, and analyzes the efficiency losses and energy output enhancement.
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