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通过不对称的化受体进行长期核化策略,使五种不同的有机太阳能电池具有>20%的效率

Chuanlin Gao¹, Yufei Wang¹, Han Tian²

¹College of New Materials and New Energies, Shenzhen Technology University, Shenzhen, 518118, China.

Advanced materials (Deerfield Beach, Fla.)

|October 27, 2025

概括

一个新的核化调节成分T10延长了有机太阳能电池中的核化时间. 这一策略通过控制供体/接受体形态来提高设备的效率和稳定性.

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:

高效的电荷转移和分子堆叠对于有机太阳能电池中的BTP核心接受器至关重要.
然而,快速核化导致不利的捐赠者/接受者 (D/A) 纤维状网络和转移稳定的形态,限制了设备的性能和稳定性.

研究的目的:

开发一种调节核化的三元组件,以控制D/A形态,提高有机太阳能电池的性能和稳定性.
为了研究一个不对称的受体T10对核化动力学和装置特征的影响.

主要方法:

开发一个不对称的受体T10与化阿塞纳夫托-奎诺林中心核心.
将T10纳入有机太阳能电池中的三元组件,其中有PM6/eC9-4F.
分子堆叠的特征,核化时间,载体寿命,缺陷密度,能量障碍和设备性能 (开通电路电压,填充因子,功率转换效率).

主要成果:

通过促进多站点分子堆叠,T10将核化时间延长到280毫秒,是经典eC9-4F的两倍.
T10和PM6/eC9-4F之间的强烈非共价相互作用抑制了过度的D/A混合,形成了一个定制的纤维状网络.
三元装置实现了延长载波寿命 (3.224 μs),降低缺陷密度 (1.37 × 10^15 cm^-3),低能量干扰 (21.82 meV),高开路电压 (0.873 V) 和填充因子 (80.68%),从而实现了 19.91% 的功率转换效率 (PCE) 和卓越的光稳定性 (T90 = 1609 h).
在五个基于BTP的接受器中验证了T10策略,达到PCE高达20.67%.

结论:

像T10这样的不对称受体的分子工程可以有效地调节有机太阳能电池中的核化动力学.
这一策略带来了改进的形态控制,增强的电荷载体动态,以及卓越的设备性能和稳定性.
以T10为媒介的核化控制为推进基于BTP的有机太阳能电池技术提供了一个广泛适用的方法.

关键词:

不对称的中央核心.双轴联接受器双轴联接受器纤维网络的纤维网络.长时间结晶.三元的有机太阳能电池是有机的太阳能电池.

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