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Forum 日本开发出生产太阳能电池新技术
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Related

日本开发出生产太阳能电池新技术

YYD
YYD over 14 years ago

来源:新华网

  日本研究人员日前宣布,他们在世界上首次开发出了通过涂抹液体硅形成非晶硅薄膜,进而生产太阳能电池的技术。新技术将有助于降低薄膜太阳能电池的成本。

  硅是制造手机、液晶和太阳能电池的重要原料。目前多用固态和气态的硅材料制造太阳能电池,但是加工固态和气态的硅材料成本较高,所需时间也较长。

  北陆尖端科学技术大学院大学教授下田达也率领的研究小组,2006年以一种含硅和氢的高分子化合物为溶质制造出稳定的液体硅。此次,他们在彻底研究液体硅特性的基础上,开发出了这种制造薄膜太阳能电池的新技术。


  新技术生产太阳能电池首先要清除液体硅中的杂质,然后在充满氮的设备内,把液体硅滴到玻璃基板上,并让基板以每分钟约3000次的高速旋转,使液体硅均匀分布在基板上,形成薄薄的一层,最后在约400摄氏度的高温下加热数十秒,就制成了性能稳定的非晶硅薄膜。

  重复上述工序3次,并加入硼和磷等成分,就可以制造出3层性质不同的硅薄膜。在加入电极制造出太阳能电池后,其发电效率为普通太阳能电池的20%左右。虽然效率尚不高,但是成本降低了60%至70%。

  目前,研究小组正准备与日本国内厂家合作,以早日将这项技术应用到生产领域。

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