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Materials and Technologies for Making Perovskite-based Solar Cell Lin Yuanjing.

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Presentation on theme: "Materials and Technologies for Making Perovskite-based Solar Cell Lin Yuanjing."— Presentation transcript:

1 Materials and Technologies for Making Perovskite-based Solar Cell Lin Yuanjing

2 Background Perovskite materials for solar cell Perovskite solar cell fabrication technology Conclusion

3 Breakthrough of Perovskite Solar Cells Amorphous Silicon Solar Cell Dye-sensitized Solar Cells Organic Photovoltaic 2014 : 19.3%

4 Classification of Perovskite Materials

5 Description of Organic-Inorganic Perovskite: ABX 3 Cubic perovskite crystal structure A: organic B:Pb, Sn X: halogen ion(I, Cl, Br) Materials: -CH 3 NH 3 PbI 3 -CH 3 NH 3 PbI 3-X Cl X, -CH 3 NH 3 PbI 3-X Br X Role of doping (Cl, Br): - Increase diffusion length and thickness - Tune the bandgap and absorption Challenges: -Increase the thickness: recombination of electron and hole - Decrease the thickness less absorbtion

6 Architecture of Perovskite Solar Cells General perovskite solar cell structure Vacuum energy level

7 Hole Transfer Layer: Spiro-MeOTAD, PEDOT: PSS Absorber Layer: Perovskite materials Electron Transfer Layer: Al 2 O 3, ZrO 2, TiO 2, ZnO, PCBM Transparent Conducting Oxides Layer: ITO, FTO Electrode: Ag, Au, Al FTO TiO 2 +Perovskite HTL Au Glass

8 Fabrication Technology Solution Processes (Planar and mesostructured layer ) : One-Step Precursor Deposition (OSPD)--simplicity Sequential Deposition Method (SDM)--better control of perovskite morphology Evaporation Processes (Planar): Dual-Source Vapor Deposition (DSVD)-- extremely uniform film Vapor-Assisted Solution Process (VASP)-- high-quality perovskite film (a)One-Step Precursor Deposition (OSPD). (b) Sequential Deposition Method (SDM). (c) Dual-Source Vapor Deposition (DSVD (d) Vapor-Assisted Solution Process (VASP)

9 Conclusion Ease of fabrication Strong solar absorption Low non-radiative carrier recombination rates Compatible with other solar cells Toxicity issues--fabrication, deployment, disposal Degradation--moisture, ultraviolet radiation Advantages Commercial Challenge

10 Thank You !


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