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China startup makes large, flexible solar panels in industry first
Japanese-developed perovskite technology goes into mass production


Pioneered by Tsutomu Miyasaka in 2009, perovskite cells are a bendable, lightweight alternative to conventional silicon solar cells. (Photo by Manami Yamada)
YUKI MISUMI, Nikkei staff writerJuly 19, 2022 02:00 JST

TOKYO -- A Chinese startup this month became the first in the world to mass-produce large, bendable perovskite solar panels, based on technology initially developed by researchers in Japan.

DaZheng (Jiangsu) Micro-Nano Technologies invested 80 million yuan ($11.8 million) to build a production line with an annual capacity of 10 megawatts in Jiangsu Province. The 40 cm by 60 cm panels will be cut into smaller pieces and shipped to smartphone and tablet makers in China.

DaZheng will invest 200 million yuan in 2023 to expand its annual production capacity to 100 MW, Chief Technology Officer Li Xin told Nikkei.

Perovskite solar cells were pioneered in 2009 by Toin University of Yokohama engineering professor Tsutomu Miyasaka and his team. Although these lightweight cells have a power conversion efficiency of around 10% -- about half that of silicon cells -- they can be incorporated into windows, walls and more.

Smaller perovskite cells have been mass-produced before, but DaZheng is the first to do so for large panels. While these cells currently cost three times as much to make as conventional silicon cells, this could potentially be brought down to half at a higher scale.


Lightweight and bendable, perovskite cells are expected to have a variety of new applications. (Photo courtesy of DaZheng (Jiangsu) Micro-Nano Technologies)

The technology is seen as a candidate to win a Nobel Prize. There is hope that the cells can eventually be applied by a printer, or be painted onto entire cars.

The global market for perovskite solar cells is projected to expand to over $2 billion by 2027 with annual growth averaging about 29% starting in 2022, according to Indian research company Astute Analytica.

Japanese companies like Kyocera and Sharp were once leading players in solar cells but downsized operations over the years as price competition ate into profits. Chinese and South Korean players now control much of the market. Japanese companies have little capacity to make new investments, allowing China to take the lead in large-scale perovskite panels.

DaZheng's Li studied under Miyasaka and continued his research after returning to China. Miyasaka also provided development support.