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Biotechnology

Hong Kong researchers perfect ultra-efficient solar cells

Perovskite cells, invented in Japan, combined with conventional, easy to produce silicon type, could open doors to wider applications

Hong Kong Polytechnic University professor Charles Chee Surya holds a prototype of the new perovskite-silicon tandem solar cell.

HONG KONG -- A new type of solar cell developed in Japan is drawing attention in Hong Kong, with a possible application to wearable devices and other equipment.

Perovskite solar cells use a thin film of perovskite crystal combining metal atoms such as lead and organic substances containing elements such as bromine to generate current. Perovskite solar cells can be produced at low cost as they can be made simply by applying the material to a substrate or other objects.

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