Tetramethylammonium based lead free perovskite active layer for solar cell application |
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| Affiliation: | 1. Laboratoire de Caractérisations Spectroscopiques et Optiques des Matériaux, Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000, Tunisia;2. Laboratoire des Sciences des Matériaux et de l''Environnement, Faculté des Sciences de Sfax, Université de Sfax, BP 1171, 3000, Tunisia;3. IMMM-UMR 6283 CNRS, LUNAM, Faculté des Sciences et Techniques, Le Mans-Université, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France;1. Departamento de Ingeniería Mecánica y Mecatrónica, Universidad Nacional de Colombia, Sede Bogotá, Bogotá, Colombia;2. Universidad de San Buenaventura, Sede Bogotá, Bogotá, Colombia;3. CIC BiomaGUNE, Paseo Miramón 182, 20009, Donostia-San Sebastian, Spain;4. NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3#, Poznan, PL, 61614, Poland;5. Universidad Militar Nueva Granada, Carrera 11 #101-80, 49300, Bogotá, Colombia |
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| Abstract: | Here we report the synthesis of a novel lead free organic-inorganic halide perovskite layer, tetramethylammonium tin tri-iodide (TMASnI3), by simple and cost-effective chemical synthesis technique. The microstructural and optical studies confirm the formation of hexagonal perovskite structure with optical band gap ～2.44 eV. A solar cell structure is fabricated by depositing the perovskite layer on zinc oxide thin film to demonstrate stable photovoltaic response under solar spectrum, where a thin layer of graphene oxide flakes on top of the perovskite layer acts as the charge transport layer. The open-circuit voltage (Voc) and short circuit current density (Jsc) for this cell as extracted from the current-voltage measurement under one sun illumination of AM1.5 solar radiation are 0.60 V and 8.65 mA/cm2, respectively. Without using any conventional hole transport layer, the power conversion efficiency (η) has been obtained as 1.92% which indicates the suitability of this perovskite material as an active layer for perovskite solar cell. |
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| Keywords: | Perovskite Thin film Optical Solar cell |
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