PNN

Roorkee (Uttarakhand) [India], September 29: India's march towards its ambitious 500 GW renewable energy target by 2030 has received a major boost with a breakthrough from the Indian Institute of Technology (IIT) Roorkee. A research team led by Prof. Soumitra Satapathi has successfully developed silicon-perovskite tandem solar cells achieving a record 30% power conversion efficiency (PCE)--a leap over the ~24% efficiency of conventional silicon modules.

For more than four decades, crystalline silicon (c-Si) solar cells have dominated the global market, but their efficiency is nearing the theoretical limit.

Meanwhile, silicon's heavy energy footprint and India's reliance on imported modules highlight the urgency for swadeshi innovation. Silicon-perovskite tandem technology, combini

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