Father of the World Solar: Maintain the capacity of 1 Taiwa light installation every year, or can control global warming | 2022 Pujiang Innovation Forum

Professor Martin Green gave a video speech. Photo by Yuan Jing

At the 20222 Pujiang Innovation Forum area (city) forums held today, Professor Martin Green, the "father of the world's solar energy", shared the latest development of the photovoltaic industry and the role played in the future development of low -carbon. In his opinion, if the world is maintained by the growth of 1 Taiwa light installation capacity each year, in the case of other conditions, it can control the trend of global warming.

"Future electricity will become very, very cheap," he said.

The cost of photovoltaic components drops sharply

According to a report released by the Special Committee of the United Nations Intergovernmental Climate Change (IPCC) last month, wind and solar energy are the main force of low -carbon emission reduction at zero -cost or negative cost.

The significant decline in the cost of photovoltaic components is an important benefit to promote the development of photovoltaic. Martin said that the price of photovoltaic power generation in 2018 was $ 4 per watt, which had fallen to 17 cents in 2020.

In addition to photovoltaic components, the development of battery technology in 2016 further reduced photovoltaic prices. Martin research launched PERC batteries, and the laboratory efficiency reached 22.8%. The technology was quickly pushed to the market. The market share in 2021 has reached 91.2%.

At present, the PERC battery is still changing the size of the wafer. In the past, the upper limit of photovoltaic battery wafers was 210 mm, and PERC broke it to 300 mm. Theoretically, it may reach 600 mm. "In the future, the size of photovoltaic batteries may be containers," Martin said.

Silicon materials may exit the photovoltaic market

Today, Martin has achieved huge success in marketization. Martin is still thinking about a question: What is the next step? He thinks it is a better battery structure.

"The batteries of different materials are stacked together to filter sunlight according to their own attributes. Each layer of battery is absorbed and transformed with photons that are most suitable for absorption, which can greatly improve the battery efficiency." He said.

The more stacking batteries, the importance of silicon materials gradually decreases. If a three -layer battery can be stacked, the silicon can withdraw from the historical stage, because by then, the film material can be replaced by thin film materials.

"This is just the beginning, and there is a great potential to decline at a very large cost. Future electricity will become very cheap." Martin said.

Author: Shen Yisha

Editor in charge: Ren Quan

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