太阳能电池的宽带间隙二元金属氧化物电子传输层
Ying Liu1,2,3,4,5, Guangyi Wang1,2,3,4,5, Xuejiao Wang1,2,3,4,5
1Institute of Photoelectronic Thin Film Devices and Technology, Renewable Energy Conversion and Storage Center, State Key Laboratory of Photovoltaic Materials and Cells, Nankai University, Tianjin, 300350, P. R. China.
原子层沉积的氧化 (ZTO) 作为晶太阳能电池的新型电子选择性材料. 这种材料提高了性能和稳定性,显示了下一代光伏的巨大潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 太阳能光伏发电是如何实现的
- 半导体设备 半导体设备
背景情况:
- 金属氧化物被探索为太阳能电池中化的替代品,以减少光吸收和制造复杂性.
- 当前的金属氧化物材料在导电性和长期稳定性方面面临限制,阻碍了设备的性能.
研究的目的:
- 引入原子层沉积 (ALD) 氧化 (ZTO) 作为晶 (c-Si) 太阳能电池的新型电子选择性材料.
- 研究ZTO薄膜的电学和光学特性及其对太阳能电池性能和稳定性的影响.
主要方法:
- 使用原子层沉积 (ALD) 制造ZTO薄膜.
- 描述ZTO薄膜的特性,包括光学带隙,传输,工作功能和氧空隙度.
- 制造和测试c-Si太阳能电池,采用ZTO作为电子选择性层,有或没有化 (LiF) 介层.
- 评估设备性能 (PCE) 和长期运行稳定性.
主要成果:
- ZTO薄膜具有扩展的光学带隙和高传输.
- 由于ZTO的特性,c-Si/ZTO/Al结构表现出欧米接触特性.
- 插入LiF将接触电阻降低到2.09 mΩ·cm2.
- 使用SiOx/ZTO/LiF/Al的c-Si太阳能电池实现了22.5%的功率转换效率 (PCE),并在空气中保持了1000多小时的稳定性.
结论:
- ZTO/LiF/Al是c-Si太阳能电池的一个有前途的电子传输层,提供了提高效率和稳定性.
- ZTO薄膜显示出超出c-Si太阳能电池的应用潜力,包括矿和有机太阳能电池.
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