- 标题
- 摘要
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- 实验方案
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Efficient Perovskite Solar Cell Modules with High Stability Enabled by Iodide Diffusion Barriers
摘要： Operational stability is crucial for the success in large-scale application of metal halide perovskites devices. The diffusion of volatile iodide component of perovskites can induce irreversible device degradation. Here, low-dimensional diffusion barriers were introduced to increase the operational stability of high-efficiency large-area PSC modules. A negligible decay was observed after 1,000 h under severe test condition for a 15% high-efficiency solar module.
关键词： Operational stability,Iodide diffusion,Large-area modules,Perovskite solar cells,Diffusion barriers
更新于2025-09-19 17:13:59
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Highly Efficient Large Area Organic Photovoltaic Module with 350 nm Thick Active Layer using Random Terpolymer Donor
摘要： Random terpolymers are developed by incorporating small portions of benzodithiophene into a highly crystalline copolymer of terthiophene and difluorobenzothiadiazole, BDT-Th0. The bulk-heterojunction (BHJ) of the copolymer BDT-Th0 is formed by process of rapid solid-liquid phase demixing of polymer crystallites, which results in irregular and unclear phase separation with large polymer aggregation. By contrast, the random terpolymer BDT-Th10 which was prepared using 10% feed molar ratio of a benzodithiophene moiety shows slower and gradual formation of the polymer packing structures without substantial agglomeration from loosely packed pseudo-crystallites in precursor solution. This results in optimal BHJ morphology with appropriate phase separation and improved domain purity. BDT-Th10 achieves high solar cell efficiency of 7.74% by successfully reproducing the optimized BHJ morphology of small cells into 58.5 cm2 sized modules with 350 nm film thickness, whereas the copolymer shows irreproducible property with much decreased efficiency of 4.37%. This result is among the highest efficiency of high-performance large area PSC modules with such a thick active film.
关键词： Random terpolymers,benzodithiophene,bulk-heterojunction,large area modules,polymer solar cells
更新于2025-09-19 17:13:59