1. Revolutionizing solar power with perovskites
Suraj Gehlot – BlogTheorem
Domain – Energy Optimization

2. Humble Request
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3. Why go Solar?

4. The Silicon Crystalline Technology

5. Solar Panel – Si Special Properties

6. Manufacturing & Cost 99.9999% pure Si Temperature Semiconductor Lab
clean environment
Industry

7. The Eureka Moment

8. Perovskites : Class of Compound
Named after Russian mineralogist Lev Perovski (1792–1856)

9. But Why?

10. Efficiency

11. Construction
p-type
e- h+ pair
n-type

12. I) n-type (FTO+TiO2) 1) 2) 3) 4) Etched Solution Zinc+HCL
TiO2 Spin Coating 3500 rpm
FTO only in the middle

13. II) Methylammonium Lead Tri-iodide perovskite
Spin Coating – 2000 rpm – 25 sec
Anneal film on hot plate – 100 C
CH3NH3PbI3 = (CH3NH3)+ Pb (I−)

14. III) p-type – Spiro-oMeTAD layer
Efficient HTM (Hole Transport Material)
Metal Electrode for top contact

15. Final Product

16. Conclusion Advantages Commercial Challenges Ease of Fabrication
Strong Solar absorption
Rapidly increasing Efficiency – 4 % in 2009 to 26 % in 2018
1/10th cost of silicon manufacturing process
Low Temperature manufacturing process
Color + Flexibility
Commercial Challenges
Stability
Toxicity of Lead
Degradation – Moisture, UV