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溶液结晶的AgBiS2膜用于太阳能电池,产生超过31 mA cm-2的光电流密度.

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概括

研究人员开发了一种环保的红外吸收器,用于太阳能电池,使用溶液加工的银硫化物 (AgBiS2). 这种稳定的AgBiS2薄膜实现了高电流密度和创纪录的5.15%的效率,对于溶液结晶薄膜.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 可再生能源可再生能源是可再生能源.
  • 纳米技术 纳米技术

背景情况:

  • 矿太阳能电池 (PSC) 经常使用有毒的重金属吸收器.
  • 需要环保和高效的替代吸收器.

研究的目的:

  • 开发一种简单的溶液加工,环保的红外吸收器.
  • 在太阳能电池中研究银硫化物 (AgBiS2) 薄膜的性能和性能.

主要方法:

  • AgBiS2薄膜的溶液结晶通过螺旋涂层前体溶液 (银,甲酸盐,DMF中的尿素).
  • 优化前体度,薄膜厚度和基板的优化.
  • 用渐变的方式制造AgBiS2吸收层.

主要成果:

  • 成功生产了250纳米厚的AgBiS2薄膜,具有不同的晶体大小.
  • 在使用AgBiS2吸收器的太阳能电池中实现了高电流密度 (>31 mA cm-2).
  • 在照明下和长时间的黑暗储存 (> 6 个月) 下证明了设备的高稳定性.
  • 在梯度AgBiS2薄膜中实现了5.15%的创纪录功率转换效率.

结论:

  • 溶液加工的AgBiS2是太阳能电池的有希望,稳定和环保的替代吸收剂.
  • 梯度制造提高了基于AgBiS2的太阳能电池的效率.
  • 这项工作为可持续和高性能光伏设备铺平了道路.