MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202511005404 A) filed by Council Of Scientific And Industrial Research on January 22, 2025, for Microwave-Assisted Synthesis Of Phase Engineered Cesium Manganese Bromide Nanocrystals With Color-Tunable Emission.
Inventors include Shatabdi Porel Mukherjee; and Pragati Sahu.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: The present invention discloses a microwave-assisted process for preparation of lead-free Mn-doped CsBr [Mn2+: CsBr], a phase-engineered all-inorganic cesium manganese bromide (0D Cs3MnBr5) and 1D CsMnBr3 phase-pure perovskite nanocrystals (NCs) the process comprising (a) preparing a cesium oleate mixture by adding 1-octadecene (ODE) and oleic acid (OA) to cesium carbonate (Cs2CO3), then (b) dissolving the oleate mixture by heating at a temperature in a range from 110 to 130? to obtain a solution; and (c) adding a mixture of manganese bromide (MnBr2), ODE, OA and oleylamine (OAm) to the dissolved solution and treating under microwave conditions at a temperature in a range from 190 to 210?, wherein, using cesium carbonate (Cs2CO3) to manganese bromide (MnBr2) in a mole ratio of 1:1 gives CsBr [Mn2+: CsBr] nanocrystal, using cesium carbonate (Cs2CO3) to manganese bromide (MnBr2) in a mole ratio of 1:2.5 gives 0D Cs3MnBr5 nanocrystal, and using cesium carbonate (Cs2CO3) to manganese bromide (MnBr2) in a mole ratio of 1:7 gives 1D CsMnBr3 nanocrystal.
Disclaimer: Curated by HT Syndication.
