形态调节通过在无素溶剂中的挥发性固体添加剂来实现,以制造高效的聚合物太阳能电池
Yufa Hou1, Qiao Wang1,2, Yifan Yang1
1Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, P. R. China.
ACS applied materials & interfaces
|February 27, 2025
概括
研究人员开发了一种使用无素溶剂的高效聚合物太阳能电池 (PSC) 的绿色方法. 挥发性固体添加剂创造了一种纤维状形态,提高了商业化性能和稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 有机电子 有机电子
背景情况:
- 聚合物太阳能电池 (PSC) 是可再生能源的前景,但通常依赖有毒的化溶剂以获得最佳性能.
- 控制活性层的微观形态对于PSC中的高功率转换效率 (PCE) 至关重要.
- 由于环境和健康问题,需要开发PSC的可持续制造方法.
研究的目的:
- 开发一种高效和环保的方法,使用无素溶剂制造高PCE PSC.
- 研究挥发性固体添加剂对PSC的形态和光伏性能的影响.
- 通过可持续实践证明PSC技术大规模商业化的潜力.
主要方法:
- 将挥发性固体添加剂,1--2,6-二二 (DIB) 和1--2,3,5-三二 (TIB) 引入托洛溶剂中.
- 调节PM6:L8-BO的聚合行为,以形成具有垂直相分离的独特纤维形态.
- 分析添加剂对刺激子解离,电荷传输和电荷重组的影响.
主要成果:
- 添加DIB和TIB导致了明显的纤维形态,其中接受器丰富在顶部,供体丰富在底部.
- 这种受控的微形态导致了增强的刺激子解离,改善的电荷传输和减少的电荷重组.
- 达到18.56% (用DIB) 和17.67% (用TIB) 的最大PCE,显著优于没有添加剂的设备.
- 完全去除固体添加剂确保了优越的形态和增强的光伏稳定性.
结论:
- 使用无素溶剂和挥发性固体添加剂制造高效PSC的简单绿色方法已经建立.
- 开发的方法有效地控制了活性层微观形态,从而显著改善了PCE和设备稳定性.
- 这种方法为聚合物太阳能电池技术的可持续和大规模商业化提供了一个可行的途径.
更多相关视频
相关概念视频
01:21Polymer Classification: Crystallinity
2.8K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
2.8K
01:26Polymer Classification: Stereospecificity
2.4K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
2.4K
02:46Halogenation of Alkenes
15.2K
Halogenation is the addition of chlorine or bromine across the double bond in an alkene to yield a vicinal dihalide. The reaction occurs in the presence of inert and non-nucleophilic solvents, such as methylene chloride, chloroform, or carbon tetrachloride.
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
15.2K