高技术封锁 新冠封锁期间,太阳能技术有了3个重大突破

新冠封锁期间,太阳能技术有了3个重大突破  

Today
the world is grappling with more than just the climate crisis
and yet even now
in the face of a global pandemic
scientists are marching on with renewable solutions.
Just this month
no less than three records have been broken in solar panel efficiency. The first and the second were achieved by scientists in the United States at the National Renewable Energy Laboratory (NREL).
Their unique "six-junction" solar cell has unprecedented energy conversion
turning intensified light into electricity at 47.1 percent efficiency - the most efficient in the world under concentrated light conditions. This record beat the previous contender established just a couple of years ago by one percent.
他们独特的“六结”太阳能电池能进行前所未有的能量转换，强光与电能的转换效率是47.1%，是聚光条件下的全球最高效率。这个纪录比几年前的纪录高出一个百分点。
"This device really demonstrates the extraordinary potential of multijunction solar cells
" says John Geisz who works at NREL.
The achievement was helped by concentrating Sunlight until it was a sizzling 143 times more intense. But even under the illumination of a single Sun
the solar cell is better than any other.
This is the second record broken - the team tested another version of their six-junction cell without concentrating the light
and achieved an unprecedented 39.2 percent efficiency.
Essentially this means that even more of the Sun's energy can now be converted into electricity.
The third record broken this month
for instance
was achieved by something called a tandem cell. This is a device
only a few micrometres thick
that bines o different semiconductors
one for the visible parts of the light spectrum and the other for infrared light.
Engineers from the German research centre Helmholtz-Zentrum Berlin created a new kind of tandem cell made from stacked silicon and perovskite with a certified efficiency of 24.16 percent.