在简单结构的聚合物捐赠体中完全锁定的结合脊椎,使高性能有机太阳能电池成为可能
Gening Xie1, Jiarui Wang2, Jikai Lv1
1College of Materials Science and Opto-Electronic Technology, Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 101408, China.
Angewandte Chemie (International ed. in English)
|November 3, 2025
概括
开发具有成本效益的聚合物捐赠者是有机太阳能电池 (OSC) 的关键. 这项研究使用非共价形态锁来创建高度平面的聚合物骨干,显著提高OSC的性能和效率.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物化学 聚合物化学
背景情况:
- 有机太阳能电池 (OSC) 的商业化需要具有成本效益的,宽带间隙的聚合物捐赠者.
- 聚合物捐赠者经常表现出因可旋转的西格玛键而导致的构造性障碍,阻碍了性能.
- 控制聚合物骨干形状对于优化光电子性能至关重要.
研究的目的:
- 为了研究非共价形态锁 (NoCLs) 对聚合物供体结构和性能的影响.
- 为设计先进的聚合物供体建立结构-属性-性能关系.
- 为OSC应用开发高性能,具有成本效益的聚合物供体.
主要方法:
- 合成具有不同NOCL的简单结构聚合物供体 (PBDT-TBT-X,X=H,F,Cl).
- 系统地调查骨干形状,光电子特性,预聚合和电荷传输.
- 二元和三元有机太阳能电池设备的制造和表征.
主要成果:
- 一个双锁定策略 (S··O和S··Cl) 导致了一个高度平面的,完全锁定的聚合物骨干 (PBDT-TBT-Cl).
- PBDT-TBT-Cl实现了16.11%的二元OSC功率转换效率 (PCE),超过了PBDT-TBT-H (6.35%) 和PBDT-TBT-F (12.69%).
- 将PBDT-TBT-Cl作为第三个组件纳入三元OSC的结果是PCE超过20%.
结论:
- 完全锁定的聚合物构造对于在OSC中实现高性能至关重要.
- 非共价形态锁为设计高性能,具有成本效益的聚合物供体提供了有效的策略.
- 这项工作提供了一个明确的路线图,通过结构控制优化聚合物供体设计.
更多相关视频
14:37Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells
Published on: November 5, 2014
9.9K
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
01:24π Molecular Orbitals of 1,3-Butadiene
11.2K
Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
11.2K
01:28Stability of Conjugated Dienes
4.1K
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
4.1K
01:16Structure of Conjugated Dienes
6.7K
Introduction
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
6.7K
01:04Anionic Chain-Growth Polymerization: Mechanism
2.4K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.4K
01:20Anionic Chain-Growth Polymerization: Overview
2.5K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.5K
01:26Photochemical 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