Project on Methyl Ammonium Lead Iodide solar cell with Copper iodide as hole transport layer and zinc oxide as electron transport layer.

1. Fabrication of Perovskite Solar Cell
Work by: Akash
Guided by:
Dr. A. Subrahmanyam
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2. Outline:
Importance of Perovskite material (CH3NH3PbI3)
Working of Perovskite Solar Cell
Work Executed
Inferences
Future Plan
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Perovskite Structure
Eg: BaTiO3 , CH3NH3PbI3

3. Importance of Perovskite material
Advantages:
Direct optical band gap of around 1.5 eV
Long diffusion length
Long minority carrier lifetimes
Broad absorption range from visible to near-infrared spectrum (800 nm)
Disadvantage:
Degradation of Methyl Ammonium Lead Iodide Perovskite
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4. Working of Perovskite Solar Cell:
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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

5. WORK EXECUTED
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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)

6. Preparation of Perovskite film
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Fig. Dual source evaporation using Pb𝐼2and 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 film
First is cooled, Second is heated.

7. XRD of perovskite
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Fig: Sample with composition 1:1 Fig: Sample composition 1:3

8. Optical characterization
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9. SEM images of perovskite thin film
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SEM image of perovskite taken at 0 days SEM image of perovskite taken after 2days

10. Working of Perovskite Solar Cell:
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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

11. XRD of CuI
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12. Optical characterization of CuI
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13. 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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14. 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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15. 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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16. THANK YOU
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