在矿太阳能电池中减少非辐射重组与多孔绝缘体接触
Wei Peng1, Kaitian Mao1, Fengchun Cai1
1Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
Science (New York, N.Y.)
|February 16, 2023
概括
研究人员开发了一种用于矿太阳能电池的新型多孔绝缘接触器 (PIC),显著减少了表面重组并提高了效率. 这一突破克服了以前的权衡,提高了设备的整体性能.
科学领域:
- 材料科学
- 可再生能源
- 太阳能发电
背景情况:
- 超薄的低导电性中间层可以减少矿太阳能电池的表面重组.
- 一个关键的挑战是开放电路电压 (Voc) 和充电因子 (FF) 之间的权衡.
研究的目的:
- 通过引入新的接触结构来克服矿太阳能电池中的Voc-FF权衡.
- 提高矿太阳能电池的效率和稳定性.
主要方法:
- 引入一个厚的 (约. 具有纳米开口的绝缘层,称为多孔绝缘接触层 (PIC).
- 溶液处理化纳米板以创建PIC结构.
- 用PIC分析细胞性能的漂移扩散模拟.
主要成果:
- 在使用PIC的p-i-n矿太阳能电池中获得了24.7%的稳定状态效率.
- 表面重组速度从64.2降至9.2厘米/秒.
- 增加了从1.2到6.0μs的大量重组寿命,改善了矿的结晶性.
- 显示出1cm2p-i-n电池的效率为23.3%,可改善湿度.
结论:
- 在没有损害电压和填充因子的情况下,PIC策略有效地减轻了表面重组.
- 在不同的p型接触和矿组合中,PIC具有广泛的适用性.
- 这种方法显著提高了矿太阳能技术的性能和潜力.
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