具有双缓冲层的柔性矿/联太阳能电池
Zheng Fang1, Lei Ding2,3, Ying Yang2
1College of Energy, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, China.
Nature
|November 10, 2025
概括
灵活的矿/太阳能电池使用一种新的双缓冲层策略实现了高效率. 这种方法提高了耐用性和粘附性,克服了下一代光伏的机械应力挑战.
科学领域:
- 材料科学
- 可再生能源
- 纳米技术
背景情况:
- 矿/双联太阳能电池为下一代光伏提供高功率转换效率 (PCE).
- 机械应力和界面分层是灵活的双重太阳能电池的关键挑战,阻碍了它们的长期稳定性.
研究的目的:
- 开发一种带有应力释放机制的双缓冲层策略,以提高柔性/太阳能电池的机械稳定性和性能.
- 在喷射沉积过程中减轻离子轰炸,并增强接口粘附,而不影响电荷提取.
主要方法:
- 使用锡氧化物 (SnOx) 设计了一种双缓冲层,具有不同的原子层沉积 (ALD) 净化时间.
- 松散的SnOx层消散了应变能量,而紧的SnOx层确保了电接触.
- 在60微米厚的超薄底电池上构建灵活的双联太阳能电池.
主要成果:
- 在1cm2面积上达到33.4%的认证PCE,在260cm2面积上达到29.8%.
- 经过43,000个曲周期和250个热周期 (-40°C至85°C) 保持超过97%的初始PCE.
- 达到高达1.77W/g的高功率.
结论:
- 双缓冲层的策略有效地增强了面接粘附性,并减轻了柔性/双重太阳能电池的机械应力.
- 这种方法显著提高了设备的耐用性,并保持了高功率转换效率,为强大,高性能的灵活太阳能技术铺平了道路.
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