太阳能电池转换效率猛增

looking

是不是真的啊
太阳能电池有这么高的转换效率!!!!!!!
第三次世界大站不会开始了

looking

是不是真的啊
20年后的事情吧

tangxiao

理论上，太阳能电池的能量转换效率不超过30%。澳大利亚新南威尔士大学硅太阳电池及硅发光实验室赵建华于1999年在一块4cm2的PERL硅电池上，实现了24.7%的最高纪录并一直保持至今。
“太阳能电池的转换效率达到了40%。”是怎么计算的啊？聚光能提高的是功率，能提高效率吗？

yzsun

各位，采用的是三结砷化镓电池，原来是在卫星上用的，价格很昂贵。现在采用高倍率聚光技术，电池的效率可以达到40%，但系统的效率没有那么高。不到30%吧。中国有这种产品，已经有很多家在做了。

ichlampard

从实验室到产业化是需要过程的

200320302052

有聚光系统一般是要高许多

shangru0768

好消息呀！

newccc

各位，采用的是三结砷化镓电池，原来是在卫星上用的，价格很昂贵。现在采用高倍率聚光技术，电池的效率可以达到40%，但系统的效率没有那么高。不到30%吧。中国有这种产品，已经有很多家在做了。
yzsun 发表于 2009-7-23 19:56

前景如何啊？

论天地

这个已不是新闻了。
最早这是07年的报道（见下）。但只是实验室的数据了。成本高，用于太空的。

Boeing Spectrolab Terrestrial Solar Cell Surpasses 40 Percent Efficiency

File photo of a Spectrolab terrestrial concentrator solar cell.

by Staff Writers
St Louis MO (SPX) Dec 07, 2006
Boeing says it's solarcell manufacturing subsidiary Spectrolab, has achieved a new world record in terrestrial concentrator solar cell efficiency. Using concentrated sunlight, Spectrolab demonstrated the ability of a photovoltaic cell to convert 40.7 percent of the sun's energy into electricity. The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colo., verified the milestone.

"This solar cell performance is the highest efficiency level any photovoltaic device has ever achieved," said Dr. David Lillington, president of Spectrolab. "The terrestrial cell we have developed uses the same technology base as our space-based cells. So, once qualified, they can be manufactured in very high volumes with minimal impact to production flow."

High efficiency multijunction cells have a significant advantage over conventional silicon cells in concentrator systems because fewer solar cells are required to achieve the same power output. This technology will continue to dramatically reduce the cost of generating electricity from solar energy as well as the cost of materials used in high-power space satellites and terrestrial applications.

"These results are particularly encouraging since they were achieved using a new class of metamorphic semiconductor materials, allowing much greater freedom in multijunction cell design for optimal conversion of the solar spectrum," said Dr. Richard R. King, principal investigator of the high efficiency solar cell research and development effort. "The excellent performance of these materials hints at still higher efficiency in future solar cells."

Spectrolab is reducing the cost of solar cell production through research investments and is working with several domestic and international solar concentrator manufacturers on clean, renewable solar energy solutions. Currently, Spectrolab's terrestrial concentrator cells are generating power in a 33-kilowatt full-scale concentrator system in the Australian desert. The company recently signed multi-million dollar contracts for its high efficiency concentrator cells and is anticipating several new contracts in the next few months.

Development of the high-efficiency concentrator cell technology was funded by the NREL's High Performance Photovoltaics program and Spectrolab.

zhanghiw

一切皆有可能，这一天一定会来到。