Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , HPLC of Formula: C6H13BrO, 4286-55-9, Name is 6-Bromohexan-1-ol, molecular formula is C6H13BrO, belongs to bromides-buliding-blocks compound. In a document, author is Gao, Can, introduce the new discover.
High-temperature induced iodide and bromide ions filling lattice for high efficient all-inorganic perovskite solar cells
All inorganic CsPbX3 perovskites have gained great attentions owing to their excellent carrier transport property and thermal stability. However, the presence of X vacancy in the CsPbX3 lattice results in a high trap density within CsPbX3 films, and subsequently affects the photovoltaic performance of solar cells. Here, we use phenylethylammonium iodide (PEAL) and phenylethylammonium bromide (PEABr) to manipulate the film quality of inorganic perovskites, which significantly improve the moisture-resistance of the CsPbI2 Br film and photovoltaic performance. It is found that there is no so-called two-dimensional PEA(2)PbI(4) and PEA(2)PbBr(4) materials formed after a high temperature annealing, but iodine or bromide vacancies can be filled by external anions. The improved film quality with a low trap density renders the enhancement of the perovskite phase stability and the device efficiency of the CsPbI2Br solar cells. This work shows that filling vacancies by external anions can promote perovskite photovoltaic performance and stability. (C) 2020 Published by Elsevier B.V.
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