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Updated: Sep 8, 2025
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通过新型a-Si间层被动化记录矿/PERC联太阳能电池的开放电路电压
Young Im Noh1, Chan Ul Kim1, Youngseok Lee2
1Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea.
Small methods
|September 6, 2025
概括
这项研究展示了使用被动发射器后接触底电池的高效/太阳能电池. 双被动化策略显著提高开通电路电压和功率转换效率,显示出有前途的稳定性.
科学领域:
- 材料科学
- 可再生能源
- 半导体物理
背景情况:
- 矿/合 (PST) 太阳能电池是下一代光伏的关键.
- 消极发射器后接触 (PERC) 电池提供强大的底部电池平台.
- 在制造过程中最大限度地减少热损伤对于PST电池的性能至关重要.
研究的目的:
- 使用扩散连接PERC底部电池开发一个单体PST太阳能电池.
- 通过和岩层的被动化技术来增强开放电路电压 (Voc).
- 展示一个高效和稳定的PST设备.
主要方法:
- 使用低温 (<200°C) 激光接触工艺制造的PERC底电池.
- 引入无形以使PERC发射器表面被动化.
- 使用盐,包括n-Octylammonium bromide (OABr) 的矿顶细胞被动化.
主要成果:
- 通过减少表面重组,无形被动化改善了PERC底部细胞Voc从0.58V到0.61V.
- 通过抑制非辐射重组,OABr被动化增强了矿顶细胞Voc从1.18V到1.22V.
- 优化的PST电池实现了创纪录的25.71%的功率转换效率 (PCE),Voc为1.810V,填充系数为80.62%的基于PERC的p型技术.
结论:
- 双化策略有效地提高了单体PST太阳能电池的性能.
- 开发的PST细胞具有高Voc和PCE,为基于PERC的技术设定了新的基准.
- 设备表现出极好的稳定性,在1000小时的湿热测试后保持90.70%的初始PCE.
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