fabrication of perovskite solar cell
TRANSCRIPT
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Fabrication of Perovskite Solar Cell
Work by: Akash
Guided by: Dr. A. Subrahmanyam
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Outline:Importance of Perovskite material (CH3NH3PbI3)Working of Perovskite Solar CellWork ExecutedInferencesFuture Plan
Perovskite Structure Eg: BaTiO3 , CH3NH3PbI3
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Importance of Perovskite material
Advantages:Direct optical band gap of around 1.5 eVLong diffusion lengthLong minority carrier lifetimesBroad absorption range from visible to near-infrared spectrum (800 nm)
Disadvantage:Degradation of Methyl Ammonium Lead Iodide Perovskite
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Working of Perovskite Solar Cell:
Electron Transport Layer Zinc Oxide (50-300nm)
Absorber Layer CH3NH3PbI3 (300nm)
Hole Transport Layer Copper Iodide (250nm)
Metal Electrode Gold
Possible Absorber Layers : CH3NH3PbCl3 , CH3NH3SnI3, CH3H3PbBr3 etc
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WORK EXECUTED
Preparation of thin films:
Perovskite thin film by thermal evaporation (Band Gap = 1.5eV)Zinc Oxide by spin coating (Band Gap = 3.3 eV)Copper Iodide by thermal evaporation ( Band Gap = 3.0eV)
Characterization of thin films: X ray Diffraction UV-Visible spectroscopy Perovskite Topography by SEM (Quanta 200)
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Preparation of Perovskite film
Fig. Dual source evaporation using and MAI
Tze-Bin Song, etal(2015)…RSC.10.1039/c4ta05246c
Base Vacuum ≈5.3E-5 mbar
Case I: One Step Process
Both the sources are heated simultaneously
Case II: Two Step Process
First one source is heated to full deposition of the filmFirst is cooled, Second is heated.
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XRD of perovskite
Fig: Sample with composition 1:1 Fig: Sample composition 1:3
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Optical characterization
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SEM images of perovskite thin film
SEM image of perovskite taken at 0 days SEM image of perovskite taken after 2days
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Working of Perovskite Solar Cell:
Electron Transport Layer Zinc Oxide (50-300nm)
Absorber Layer CH3NH3PbI3 (300nm)
Hole Transport Layer Copper Iodide (250nm)
Metal Electrode Gold
Possible Absorber Layers : CH3NH3PbCl3 , CH3NH3SnI3, CH3H3PbBr3 etc
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XRD of CuI
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Optical characterization of CuI
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Inferences:Synthesis of MAI by chemical process was achieved successfully.
Perovskite material and CuI thin films were optimised to a required thickness of around 300nm and 200nm respectively.
Band gap of Perovskite material (CH3NH3PbI3) and CuI were verified using UV visible spectroscopy.
Degradation affected the surface morphology of the perovskite material
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Future work
Optical characterization of ZnO
Raman Studies of Absorber Layer
Fabrication of Perovskite Solar Cell
Current Voltage characteristics of the Device
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REFERENCES
[1]. Ming-Hsien Li, Po-Shen Shen, Kuo-Chin Wang, Tzung-Fang Guo and Peter Chen* RSC DOI: 10.1039/C4TA06425A(2012) [2]. Georgia Sfyri ChalluriVijayKumar DimitriosRaptis VassiliosDracopoulos PanagiotisLianos. Solar EnergyMaterials&SolarCells134(2015)60–63.[3]. Dianyi Liu and Timothy L. Kelly*. DOI: 10.1038/NPHOTON.2013.342.[4]. Shiqiang Luo, Walid A. Daouda. RSC 10.1039/C4TA04953E(2012) .[5]. Waldo J. E. Beek, Martijn M. Wienk, Martijn Kemerink, Xiaoniu Yang, and Rene´ A. J. Janssen*. J. Phys. Chem. B 2005, 109, 9505-9516 9505[6]. Jeffrey A. Christians,†,§ Raymond C. M. Fung,†,# and Prashant V. Kamat*. dx.doi.org/10.1021/ja411014k | J. Am. Chem. Soc. 2014, 136, 758−764[7]. Hyun-Seok Ko, Jin-Wook Lee and Nam-Gyu Park*. J. Mater. Chem. A, 2015, 3, 8808.[8]. Yuanyuan Zhou, Mengjin Yang, Wenwen Wu, Alexander L. Vasiliev,‡a Kai Zhu* and Nitin P. Padture*. J. Mater. Chem. A, 2015, 3, 8178[9]. http://www.plansee.com/en/Products-System-components-and-accessories-Coating systems-Evaporation-boats- 100.htm[10]. www.google.com
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THANK YOU