Fabrication and investigation of a new highly humidity stable nanocrystalline perovskite,tetramethylammonium lead triiodide to be used in solar cells |
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| Affiliation: | 1. Laboratoire de Physique des Matériaux, Faculté des Sciences de Sfax, Université de Sfax, B. P. 1171, 3000 Sfax, Tunisia;2. Institut Néel, B.P. 166, 38042 Grenoble Cedex 9, France;1. Department of Chemistry, Anna University, Chennai 600025, India;2. Biological Material Laboratory, Central Leather Research Institute, Chennai 600020, India;1. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi''an 710072, PR China;2. College of Aerospace Engineering, Chongqing University, Chongqing 400044, PR China;3. College of Chemistry and Materials Science, Northwest University, Xi'' an 710069, PR China;4. Department of Mechanical Engineering, Khalifa University, Abu Dhabi 127788, UAE;1. College of Chemistry and Molecular Engineering, Zhengzhou University, No.100, Science Road, Zhengzhou 450001, China;2. College of Chemistry and Environment, Henan Institute of Education, Zhengzhou 450046, China;1. State Key Laboratory Base of Novel Function Materials and Preparation Science, School of Material Sciences and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China;2. CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Shanghai, 201899, China;3. Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province, Ningbo, Zhejiang, 315211, China;4. New Energy Technology Joint Research and Development Centre, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899, China;5. Zhejiang Energy Group R&D, Hangzhou, Zhejiang, 310003, China |
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| Abstract: | Hybrid organic-inorganic halide perovskite (CH3NH3PbI3) materials have broad applications such as photovoltaics, light emitting diodes, and sensors. However, one of the major drawbacks of these materials is their sensitivity to moisture. Here, a new promising perovskite nanocrystal: tetramethylammonium lead triiodide (CH3)4NPbI3 has been introduced and fabricated. Investigation of morphology, structural, optical and stability properties was done by XRD, SEM, TEM, and UV–visible. Characterization prove that the processed powder is in the form of nanoparticles and drop cast film has a hexagonal rod-like morphology. Crystal structure was determined by powder x-ray diffraction and electron diffraction pattern. It shows a perovskite crystal structure with a hexagonal unit cell. Powder XRD after 45 days suggests that this new compound is stable in humid conditions. Direct optical band gap of this material was obtained by transforming diffuse reflectance spectrum to Kubelka-Munk spectrum and it was 2.66 eV. |
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| Keywords: | Perovskite Powders: chemical preparation Optical properties |
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