Featured in Solar springs eternal – 09-2023

The dawn of perovskites in China

Chinese PV giant Longi announced a 33.5%-efficient perovskite-silicon tandem solar cell on a commercial-grade CZ (Czochralski-method) wafer in June, certified by the European Solar Test Installation. Vincent Shaw takes a look at China’s pursuit of perovskites.

By

Max Hall

07 Sep 2023

Photo: Microquanta

Years of rapid development and an integrated value chain for silicon cells have slashed the cost of solar energy. Now, the conversion efficiency of these single-junction cells is approaching its theoretical upper limit of around 29%, and the marginal cost of further efficiency improvements is rising. Tandem devices that employ a perovskite solar cell on …

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