埃斯特-基连接器调节的分子折叠在头对头的二次元,使有机太阳能电池的效率>20%成为可能
Xin Chen1, Jie Wang1, Jiong Yang1
1State Key Laboratory of Elemento-Organic Chemistry, Key Laboratory of Functional Polymer Materials, College of Chemistry, Renewable Energy Conversion and Storage Center (RECAST), Nankai University, Tianjin 300071, China.
研究人员通过改变灵活的基链长度开发了有机太阳能电池 (OSC) 的新二维受体. 这种方法提高了效率和稳定性,实现功率转换效率 (PCE) 超过20%,并改善了机械性能.
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:
- 模态接受器显示出高效,稳定和可拉伸的有机太阳能电池 (OSC) 的前景.
- 形态控制仍然是一个挑战,通常限制二维接受器的效率.
- 现有的合成方法可能涉及昂贵的催化剂和有毒试剂.
研究的目的:
- 设计和合成新的头对头灵活的基链连接的二维受体.
- 为了研究不同基连接器长度对分子构造,包装和聚合的影响.
- 为了提高有机太阳能电池的效率,稳定性和机械性能.
主要方法:
- 通过化对三维受体 (CH-E2,CH-E6,CH-E10) 和单体对应物 (CH-E1) 的系统合成.
- 分子构造,包装图案和聚合行为的表征.
- 使用合成材料制造和测试有机太阳能电池设备.
主要成果:
- 发现基连接器的长度对分子构造,包装和聚合具有重要影响.
- 使用CH-E6的有机太阳能电池实现了19.17% (二进制) 和20.14% (三进制) 的功率转换效率 (PCE).
- 柔性连接器在应力下改善了形态稳定性和增强了机械性能,裂纹开始应变 (COS) 为20%.
结论:
- 开发的合成策略避免了危险的试剂和昂贵的催化剂.
- 优化了具有特定链接长度的二维接受器,从而提高了设备的性能和稳定性.
- 在二元接受器中柔性基链有助于提高有机太阳能电池的运行稳定性和伸展性.
更多相关视频
09:32Well-aligned Vertically Oriented ZnO Nanorod Arrays and their Application in Inverted Small Molecule Solar Cells
Published on: April 25, 2018
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
相关概念视频
Free-Radical Chain Reaction and Polymerization of Alkenes
π Molecular Orbitals of 1,3-Butadiene
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...
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry
Stability of Conjugated Dienes
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.
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
