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

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Why go Solar?

The Silicon Crystalline Technology

Solar Panel – Si Special Properties

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

The Eureka Moment

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

But Why?

Efficiency

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

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

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

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

Final Product

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