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Advances in Nano Research Volume 13, Number 2, August 2022 , pages 187-197 DOI: https://doi.org/10.12989/anr.2022.13.2.187 |
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 open accessWater-stable solvent dependent multicolored perovskites based on lead bromide |
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Mirkomil Sharipov, Soojin Hwang, Won June Kim, Bui The Huy,
Salah M. Tawfik and Yong-Ill Lee
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| Abstract | ||
| The synthesis of organic and hybrid organic-inorganic perovskites directly from solution improves the cost- and energy-efficiency of processing. To date, numerous research efforts have been devoted to investigating the influence of the various solvent parameters for the synthesis of lead halide perovskites, focused on the effects of different single solvents on the efficiency of the resulting perovskites. In this work, we investigated the effect of solvent blends for the first time on the structure and phase of perovskites produced via the Lewis base vapor diffusion method to develop a new synthetic approach for water-stable CsPbBr3 particles with nanometer-sized dimensions. Solvent blends prepared with DMF and water-miscible solvents with different Gutmann's donor numbers (DN) affect the Pb ions differently, resulting in a variety of lead bromide species with various colors. The use of a DMF/isopropanol solvent mixture was found to induce the formation of the Ruddlesden–Popper perovskite based on lead bromide. This perovskite undergoes a blue color shift in the solvated state owing to the separation of nanoplatelets. In contrast, the replacement of isopropanol with DMSO, which has a high DN, induces the formation of spherical CsPbBr3 perovskite nanoparticles that exhibit green emission. Finally, the integration of acetone in the solvent system leads to the formation of lead bromide complexes with a yellow-orange color and the perovskite CsPbBr3. | ||
| Key Words | ||
| Gutmann's donor number; Lewis-base vapor diffusion; multicolor lead bromide perovskite; perovskite phase structure control; water-stable | ||
| Address | ||
| Mirkomil Sharipov, Soojin Hwang, Won June Kim: Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea Bui The Huy and Yong-Ill Lee: Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea/ Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, Ho Chi Minh City, Vietnam Salah M. Tawfik: Department of Chemistry, Changwon National University, Changwon 51140, Republic of Korea/ Department of Petrochemicals, Egyptian Petroleum Research Institute, Cairo, 11727 Egypt | ||