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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