Starting materials: FABr (0.53M), PbBr2 (0.4 M), Ethanol, OLA (625 μL), OA (25 μL), (Toluene, 12.5 mL
Product: FAPbBr3
Description: The 2D perovskite FAPbBr3 was synthesized from a solution that included FABr ( 625 μL)dissolved in a non-polar toluene solvent and a polar Ethanol solvent. The nonpolar solvent contained OA and OLA as organic surfactants, which stabilized the solutions. As a result, a precipitate of the solution formed from the poor solubility of perovskites in the nonpolar solvent. This yielded the final product of FAPbBr3 nanoplatelets in 2.5 mL of Toluene, which was then dissolved in ethanol (375 μL) to produce higher and more stable concentrations of FAPbBr3 nanoplatelet.
Method: Photoluminescence Spectra
Description: A CCD spectrometer was used to obtain the absolute absorbance of the colloidal solution in the non-polar solvent of Toluene. The PL of the colloidal solutions were obtained using the Quantaurus QY (C11347-11) from Hamamatsu.
Starting materials: MABr (0.53 M) , PbBr2 (0.4 M), OLA (625 μL) and OA (25 μL), (Toluene, 12.5 mL)
Product: MAPbBr3
Description: The 2D perovskite MAPbBr3 was synthesized from a solution containing MABr (0.53 M) and PbBr2 (0.4M), which was dissolved in a polar DMF solvent. This solution was then mixed with a non-polar Toluene solvent. As a result, a precipitate of MAPbBr3 was formed as nanoplatelets via crystallization.
Method: Photoluminescence Spectra
Description: A CCD spectrometer was used to obtain the absolute absorbance of the colloidal solution in the non-polar solvent of Toluene. The PL of the colloidal solutions were obtained using the Quantaurus QY (C11347-11) from Hamamatsu.