长寿命的电荷转移状态和双电缆结合聚合物的接口锁定使高效和稳定的有机太阳能电池成为可能
Haisheng Fang1, Chengyi Xiao1, Shijie Liang1
1Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.
Angewandte Chemie (International ed. in English)
|September 11, 2025
概括
一种新的双电缆聚合物SC-1F通过优化捐赠/接受器接口来提高有机太阳能电池 (OSC) 的性能和稳定性. 这提高了功率转换效率 (PCE),并大大提高了热和存储寿命.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 在批量异质连接 (BHJ) 有机太阳能电池 (OSC) 中的捐赠者/接受者 (D/A) 接口对于刺激子解离和分子扩散至关重要,影响设备的效率和稳定性.
- 优化这些接口是推进OSC技术的关键.
研究的目的:
- 设计和研究双电缆结合聚合物SC-1F,作为BHJ OSC中的接口修饰器.
- 通过接口工程提高有机太阳能电池的效率和长期稳定性.
主要方法:
- 合成双电缆结合聚合物SC-1F.
- 将SC-1F纳入PM6:BTP-eC9混合物,形成一个三元BHJ系统.
- 界面特性,电荷生成和设备性能 (PCE,T80稳定性) 的表征.
主要成果:
- SC-1F自发分离到D/A接口,与接受器形成一个有利的接口.
- SC-1F (>3 ns) 的长寿命电荷转移 (CT) 状态增强了电荷生成,将PCE从19.00%提高到20.12%.
- SC-1F充当"界面锁",防止在热应力下供体和受体聚合,显著改善T80稳定性 (在65°C下为2175小时而不是530小时) 和储存稳定性 (>10,000小时).
结论:
- 双电缆联聚合物是优化OSC中的D/A接口的有效第三组件.
- SC-1F显著提高了有机太阳能电池的功率转换效率和运行/存储稳定性.
- 这项工作为开发高效和耐用的有机太阳能电池提出了一个有前途的战略.
更多相关视频
06:49In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
Published on: March 2, 2021
6.7K
09:32Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells
Published on: April 25, 2018
9.0K
相关概念视频
P-N junction
1.1K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.1K
Photochemical Electrocyclic Reactions: Stereochemistry
2.2K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
2.2K
