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Perovskite solar cells (PSCs) have attracted extensive attention due to their higher power conversion efficiency (PCE) and simple fabrication process. However, the open‐circuit voltage (VOC) loss remains a significant impediment to enhance device performance. Here, a facile strategy to boost the VOC to 95.5% of the Shockley‐Queisser (S‐Q) limit through the introduction of a universal multifunctional...
Perovskites
In article number 2307960, Xiao Wang, Longbin Qiu, and co‐workers developed an ultrahigh humidity treatment strategy to facilitate the effective diffusion of formamidinium iodide from the top surface to the buried bottom interface on the sequential vapor‐deposited bilayer structure. High‐efficiency and stable perovskite solar cells deposited by a sequential vapor deposition process with...
The quality of two‐step processed perovskites is significantly influenced by the distribution of organic amine salts. Especially, modulating the distribution of organic amine salts remains a grand challenge for sequential vapor‐deposited perovskites due to the blocking effect of bottom compact PbI2. Herein, an ultrahigh humidity treatment strategy is developed to facilitate the diffusion of formamidinium...
Although hole transport layers (HTLs) based on solution‐processed doped Spiro‐OMeTAD are extremely popular and effective for their remarkable performance in n‐i‐p perovskite solar cells (PSCs), their scalable application is still being held back by poor chemical stability and unsatisfied scalability. Essentially, the volatile components and hygroscopic nature of ionic salts often cause morphological...