基于碳的无孔导体矿光伏的电子提取优化,记录1.41VVOC
Zhiqi Li1, Xiyun Xie1, Zhenhai Ai1
1Department of Electrical and Electronic Engineering, Photonic Research Institute (PRI), Research Institute of Smart Energy (RISE), The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077, China.
Advanced materials (Deerfield Beach, Fla.)
|April 16, 2025
概括
在无孔传输层的矿太阳能电池 (PSC) 中的梯度能量水平调制增强了电子提取,提高了功率转换效率 (PCE) 和稳定性. 这一策略显著降低了电压损失,改善了光伏性能.
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
- 矿石太阳能电池 矿石太阳能电池
背景情况:
- 没有孔输送层 (HTL) 的碳基矿太阳能电池 (PSC) 提供低成本和高稳定性.
- 然而,由于运载体提取效率低下而导致的电压缺陷限制了它们的功率转换效率 (PCE).
- 前电子提取是一个关键的,经常被忽视的因素,导致这些设备的电压损失.
研究的目的:
- 调查一个梯度电子能量水平调制策略,以减少无HTLPSC的电压损失.
- 为了增强光生成电子的提取和改善载体分离和收集.
- 为了实现高性能,稳定和高效的基于碳的无HTLPSC.
主要方法:
- 在前面接口实施梯度电子能量水平调制策略.
- 使用这种调制制,制造基于碳的CsPbI2Br矿太阳能电池.
- 设备性能的表征,包括开放电路电压 (VOC),PCE和长期稳定性.
主要成果:
- 梯度能量水平调制有效地加速了电子提取,减少了电压损失.
- 这一策略改善了载体分离和收集,同时最大限度地减少了后接触处的重组.
- 实现了1.41V的开放电路电压 (VOC) 记录,PCE为17.42%,并在1000小时后保持了>92%的效率.
结论:
- 梯度电子能量水平调制是一种可行的策略,可以克服在无HTLPSC的电压缺陷.
- 优化前电子提取对于提高基于碳的无HTL矿光伏的性能至关重要.
- 开发的PSC显示了有效和稳定的太阳能转换的巨大潜力.
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