无氧化基无添加剂 CsPbI 的电压超过 1.4 V
Zhanglin Guo1, Ajay Kumar Jena1, Izuru Takei2
1Graduate School of Engineering, Toin University of Yokohama, 1614 Kuroganecho, Aoba, Yokohama, Kanagawa 225-8503, Japan.
Journal of the American Chemical Society
|May 2, 2020
概括
这种简单的方法提高了太阳能电池的效率和稳定性,这对于并联太阳能电池应用至关重要.
科学领域:
- 材料科学
- 可再生能源
- 太阳能发电
背景情况:
- CsPbI2Br 矿太阳能电池显示出协同应用的前景.
- 电流设备受到低开通电压 (Voc) 的影响,阻碍了它们的潜力.
- 现有治疗方法对Voc的改善有限.
研究的目的:
- 研究老化SnCl2前体溶液对CsPbI2Br太阳能电池性能的影响.
- 提高CsPbI2Br太阳能电池的Voc和效率.
- 了解所观察到的性能增强的潜在机制.
主要方法:
- 电子输送层的SnCl2前体溶液的老化
- 使用无添加剂的聚合物孔输送材料 (HTM) 制造CsPbI2Br太阳能电池.
- 膜形态,化学状态,电子带结构和设备性能的表征.
主要成果:
- 年龄化SnCl2溶液促进了Voc超过1.40V,冠军Voc为1.43V (Voc缺陷<0.50V).
- 达到超过15.5%的功率转换效率,且具有很高的可重复性.
- 陈旧的SnCl2溶液形成了纯Sn4+的均无形SnOx膜,提高了SnOx导电带并减少了接口缺陷.
结论:
- 一种简单的SnCl2溶液老化技术显著提高了CsPbI2Br太阳能电池的Voc和效率.
- 这种方法提高了设备的稳定性,并减少了Voc缺陷,使其适用于并行太阳能电池应用.
- 这些发现为开发高性能,稳定和成本效益的基于CsPbI2Br的太阳能电池提供了有希望的途径.
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