Journal
ADVANCED ENERGY MATERIALS
Volume 11, Issue 34, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202101018
Keywords
1D; 2-diethylaminoethylchloride hydrochloride; additives; perovskitoids; templates
Categories
Funding
- National Natural Science Foundation of China [51872338]
- National Key Research and Development Program of China [2019YFB1503204, 2018YFB1500101]
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Using low dimensional perovskite is a promising strategy to improve the stability and efficiency of PSCs, achieving highly efficient and stable devices with good reproducibility. The 1D@3D PSC demonstrated high conversion efficiency and maintained high performance under different conditions in the experiment.
Longevity is a long-standing concern for organic-inorganic hybrid perovskite solar cells (PSCs). Recently, the use of low dimensional perovskite has been proven to be a promising strategy to improve the stability of PSCs. Herein, it is demonstrated that 1D perovskitoid based on 2-diethylaminoethylchloride cations can act as a template to induce 1D@3D perovskite structure, leading to smoother surface texture, longer charge-carrier lifetime, smaller residual tensile strain, and reduced surface-defect density in the perovskite film. With this strategy, highly efficient and stable 1D@3D PSC with excellent reproducibility, showing a champion power conversion efficiency (PCE) of 22.9% under standard AM 1.5 G one sun illumination is realized. The unencapsulated optimized devices can retain 94.7%, 92.4%, and 90.0% of their initial PCEs for 2100, 2200, and 2200 h under ambient air, 85 degrees C and illumination conditions, respectively.
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