酸的预吸收提高了同感应太阳能电池的效率
Yameng Ren1, Dan Zhang2,3, Jiajia Suo2,4
1Laboratory of Photonics and Interfaces, Institute of Chemical Sciences & Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Nature
|October 26, 2022
概括
研究人员通过在二氧化表面上预吸附酸衍生物来开发染料敏感太阳能电池 (DSC) 的新方法. 这增强了染料包装,并提高了光伏性能,以获得高效的光线采集.
科学领域:
- 材料科学
- 太阳能发电
- 纳米技术
背景情况:
- 染料敏感化太阳能电池 (DSC) 使用二氧化 (TiO2) 的光敏化剂进行光电转换.
- DSC提供了透明度和低成本制造等优势,在建筑元素中找到应用.
- 改善TiO2上的染料组装对于提高DSC效率和电荷产生至关重要.
研究的目的:
- 开发一种用于在TiO2表面上预吸附酸衍生物单层的新方法.
- 改进新设计的共吸收敏感剂的染料分子包装和光伏性能.
- 在整个可见光谱中实现高效的光收获.
主要方法:
- 在纳米晶体半孔TiO2薄膜上预吸附酸衍生物单层.
- 设计和共吸附两种新型敏感剂与预吸收层.
- 具有增强染料组合的染料敏感太阳能电池的制造和测试.
主要成果:
- 在标准 AM 1.5G 阳光下,共敏感化太阳能电池的功率转换效率达到了 15.2% (独立证实).
- 经过500小时的长期运行稳定性.
- 具有较大的活性面积 (2.8厘米) 的装置在各种环境光强度下显示了28.4%-30.2%的效率,具有高稳定性.
结论:
- 预吸附策略有效地提高了DSC中的染料分子包装和光伏性能.
- 开发的共感化器有效地收集可见光谱中的光.
- 这种方法为使用环境光供电的低功耗电子设备提供了高性能DSC的途径.
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