Solar needs 'visible', 'invisible' guiding hand
China DailyWorkers inspect rooftop photovoltaic panels in Jinhua, Zhejiang province, in December. Solar panel makers, including Trina Solar Co and GCL Technology Holdings Ltd, converged at the International Solar Photovoltaic and Smart Energy conference in June and called for industry collaboration, as a jump in capacity has led to a steep plunge in prices of solar cells and modules, slashing the industry's profits. Zhu Gongshan, chairman of GCL Technology Holdings Ltd, said he believes breakthroughs in core technology can help avoid over-competition in China's solar sector and lead to the expansion of industry limits. RUAN XUEFENG/FOR CHINA DAILY Longi Green Energy Technology Co, one of the world's largest solar panel manufacturers, announced in June a new world record efficiency of 30.1 percent for commercial M6 size wafer-level silicon-perovskite tandem solar cells, an emerging photovoltaic technology that is being actively researched by the global photovoltaic industry. The company's research into mass production technology for tandem solar cells in recent years has boosted the global photovoltaic industry's confidence and expectations for silicon-perovskite tandem solar cell technology, it said.
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