研究目的
To demonstrate that light transmission can be largely decoupled from harvesting in organic solar cells by optically tailoring an infrared shifted nonfullerene acceptor based organic cell architecture, achieving high efficiency and transparency.
研究成果
The optical tailoring of a 1D nanophotonic structure in organic solar cells enables efficient light harvesting at large angles of incidence while maintaining high transparency. This approach achieves a power conversion efficiency of 9.67% at 50° incidence and an average visual transmission above 50%, demonstrating the potential for integrating photovoltaic cells into transparent elements.
研究不足
The study focuses on specific materials and architectures, and the performance may vary with different materials or under different environmental conditions. The outdoor measurements were conducted under specific conditions (close to the spring equinox), which may not represent year-round performance.
1：Experimental Design and Method Selection:
The study involved the design of a 1D nanophotonic structure (1D-NPS) to enhance light harvesting at large angles of incidence while maintaining high transparency. The transfer matrix full wave vector method was used for optical simulations.
2：Sample Selection and Data Sources:
The active layer blend consisted of PTB7-Th:FOIC:PC71BM, chosen for its efficient utilization of near-infrared solar irradiation.
3：List of Experimental Equipment and Materials:
Materials included PTB7-Th, FOIC, PC71BM, MoO3, LiF, and Ag for electrodes. Equipment included a solar simulator, spectrophotometer, and spectroscopic ellipsometer.
4：Experimental Procedures and Operational Workflow:
The fabrication process involved spin-coating the active layer, depositing thin metal electrodes, and evaporating dielectric layers for the 1D-NPS. Outdoor measurements were conducted to evaluate performance under real sunlight conditions.
5：Data Analysis Methods:
The performance was evaluated based on power conversion efficiency (PCE), external quantum efficiency (EQE), and average visual transmission (AVT).
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