动态结使得高性能和机械坚固的有机太阳能电池能够使用非化溶剂加工
Haozhe He1,2, Xiaojun Li3,4, Jingyuan Zhang1
1CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
Nature communications
|January 17, 2025
概括
研究人员开发了新的有机太阳能电池 (OSC),提高了性能和机械强度. 使用绿色溶剂的PM6:BTA-E3有机太阳能电池实现了创纪录的19.92%的功率转换效率.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 灵活和可拉伸的有机太阳能电池 (OSC) 的商业化需要具有高性能和机械强度的活性层系统.
- 开发新的受体材料是提高OSC效率和稳定的关键.
研究的目的:
- 为OSC应用设计和合成具有不同侧链的新受体分子.
- 研究侧链工程对光伏性能,机械性能和OSC的形态稳定性的影响.
主要方法:
- 合成四个受体分子 (BTA-C6,BTA-E3,BTA-E6,BTA-E9) 具有不同的侧链长度和乙烯末端组.
- 使用与o-xylen加工的PM6:接受器混合物制造和表征OSC.
- 对功率转换效率,能量损耗,电荷传输,伸展性和热稳定性的评估.
主要成果:
- 使用o-xylen加工的基于PM6:BTA-E3的OSC实现了19.57%的认证功率转换效率 (19.92%作为准备),这是使用绿色溶剂的二元OSC中最高的.
- BTA-E3接受器及其乙烯侧链,促进了适当的相位分离和垂直相位分布,减少了能量损失并增强了电荷传输.
- 乙烯侧链引入了键,显著提高了活性层的伸展性和热稳定性.
结论:
- 在接受器侧链中的动态结对于同时提高光伏性能,机械强度和OSC的形态稳定性至关重要.
- PM6:BTA-E3系统展示了开发高性能,耐用,灵活和可拉伸的有机太阳能电池的有希望的途径.
- 这项研究强调了分子设计,特别是侧链工程在推进OSC技术中的重要性.
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
6.2K
07:32Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization
Published on: January 29, 2017
10.9K
相关概念视频
Hydrogen Bonds
7.9K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
7.9K
Stability of Conjugated Dienes
3.2K
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.
3.2K
Intermolecular Forces
57.6K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
57.6K
Molecular Shape and Polarity
59.6K
Dipole Moment of a Molecule
59.6K
π Molecular Orbitals of 1,3-Butadiene
8.6K
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...
8.6K
Solvents
64.1K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
64.1K
