Related references
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Article
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Summary: This study proposes a buried interface modification strategy (BIMS) to improve the fabrication of tin perovskite films by inducing tailored two-dimensional perovskites at the buried interface. By forming a preferred crystal orientation and reducing interface defects, the perovskite solar cells (PSCs) achieved the highest power conversion efficiency (PCE) of 8.6%. The unencapsulated PSC also maintained 80% of its initial PCE after 600 hours of continuous illumination at high temperature.
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Summary: Achieving long-term stability is the key challenge for widespread commercialization of perovskite solar cells. This study introduces a high-temperature dimethyl-sulfoxide-free processing method to control the crystallization of perovskite films, effectively improving the material quality and operational stability of the devices. The encapsulated devices showed improved lifetimes, with a median T80 of 1,190 hours and a champion device reaching a T80 of 1,410 hours.
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Summary: Controlling the crystallinity and surface morphology of perovskite layers is crucial for achieving high-efficiency perovskite solar cells. By adding alkylammonium chlorides (RACl) to a-formamidinium lead iodide (FAPbI(3)), the crystallization process and surface morphology of the perovskite thin films can be controlled. The resulting perovskite thin layers facilitate the fabrication of perovskite solar cells with a high power-conversion efficiency of 26.08%.
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Summary: To solve the problems of uncontrollable crystallization process and facile oxidation of Sn2+, a series of acetates are introduced into the perovskite precursor solution. Formamidine acetate (FAAc) is found to have strong C(sic)O-Sn coordination with Sn2+, which can stabilize the lattice structure, minimize defect states, and suppress the oxidation of Sn2+. By introducing FAAc into the precursor, the power conversion efficiency of the device is increased from initially 9.84% to 12.43%, and it can maintain 94% of its initial value for 2000 hours in N2 atmosphere. This work provides a feasible strategy for depositing high-quality tin perovskite films, which is crucial for related photovoltaics and other optoelectronic devices.
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(2022)
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Zheng Zhang et al.
Summary: Lead-free tin perovskite solar cells (PKSCs) have low efficiency due to rough surface morphology and high number of defects. A posttreatment strategy using sequential passivation with acetylacetone (ACAC) and ethylenediamine (EDA) is proposed to reduce trap density, enlarge grain size, and regulate energy level. The study achieves a promising 13% efficiency with better stability.
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Qi Jiang et al.
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He Dong et al.
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Zhenxi Wan et al.
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ACS ENERGY LETTERS
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Tianhao Wu et al.
Summary: Efficient and stable development of lead-free perovskite solar cells (PSCs) using tin as a promising candidate for high-performance, eco-friendly photovoltaic technology has been reviewed. Approaches toward efficiency improvement and challenges in reaching higher PCE and scalable production for tin PSCs have been discussed in this paper with the goal of accelerating their commercialization.
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Bin-Bin Yu et al.
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Yang Sun et al.
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Ligang Xu et al.
Summary: Lead-based perovskite solar cells have excellent properties but the presence of lead hinders market prospects. Sn perovskites as alternatives are gaining attention, with inverted Sn-based PSCs showing cost-effectiveness and competitive efficiency, though challenges remain.
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Chengbo Wang et al.
Summary: The illumination stability and efficiency of Sn-based perovskites have been substantially improved by synergistically introducing phenylhydrazine cation and halogen anions, resulting in a device with a power conversion efficiency of 13.4% and excellent long-term durability. This method offers a universal approach for enhancing the performance of Sn-based perovskites.
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