Synthesis of MAPbBr3-iYi (Y=I, Cl
[EN] Methylammonium lead halide perovskites with different halides (iodide, bromide and chloride) have been synthetized from methylamine, lead nitrate and the corresponding hydroX acid (X = I, Br, Cl) precursors. Subsequently MAPbBr3-iYi (Y= I, Cl; i=0, 1, 2, 3) perovskites were deposited as thin fi...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/103734 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/103734 |
| Access Level: | acceso abierto |
| Palabra clave: | Hybrid perovskites Methylammonium lead halide Optical absorption Photoluminescence FISICA APLICADA |
| Sumario: | [EN] Methylammonium lead halide perovskites with different halides (iodide, bromide and chloride) have been synthetized from methylamine, lead nitrate and the corresponding hydroX acid (X = I, Br, Cl) precursors. Subsequently MAPbBr3-iYi (Y= I, Cl; i=0, 1, 2, 3) perovskites were deposited as thin films onto FTO substrates by spin coating or dipping. Thin film perovskites were then characterized by X-Ray Diffraction, elemental analysis and optical spectrometry. Crystallites sizes are between 100-600 nm depending on the synthesis temperature. All synthetized MAPbX3-iYi perovskites crystallized in the same cubic phase irrespective of the X and Y components and a unique phase is observed. Elemental analy- sis shows that in all cases the atomic components meet the expected stoichiometric formulae. The bandgap of thin film MAPbX3-iYi perovskites were inferred from transmittance and reflectance spectral measurements. It is found that the on-set of the absorption edge for thin film MAPbX3 perovskites is about 1.66, 2.55 and 3.37 eV for X= I, Br, Cl, respectively "and it reaches intermediate values for mixed MAPbX3-iYi perovskites. |
|---|