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一个化环电子接收器与基于Phthalimide的终端组,用于高效的Ternary有机太阳能电池

Tianyu Xu^1,2, Xinxin Zhang², Shengxiong Zhang²

¹The School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.

ACS applied materials & interfaces

|January 17, 2024

概括

研究人员开发了一种新的有机太阳能电池材料,BTP-PIO,使用基于phthalimide的末端组. 这种材料提高了有机光伏 (OPV) 的性能,在三元器件中实现了17.10%的功率转换效率 (PCE).

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:

三元策略是提高有机光伏 (OPV) 性能的一种经过验证的方法.
在OPV中,传统的电子接受器通常使用特定的结尾组,这些结尾组可以被修改.

研究的目的:

设计和合成一种新型的化环电子受体,BTP-PIO,用修饰的基于胺的末端组.
为了研究三元有机太阳能电池设备的性能,将BTP-PIO作为客电子接受器.
探索终端组修改对OPV材料的性能和效率的影响.

主要方法:

新型电子受体BTP-PIO的合成.
三元有机太阳能电池设备的制造和表征 (PM6:Y6:BTP-PIO).
性能评估包括开通电路电压 (VOC),短路电流密度 (JSC),填充因子 (FF) 和功率转换效率 (PCE).
分析电荷转移,载体重组,能量损失,可混合性和分子包装.

主要成果:

与Y6.6相比,BTP-PIO具有更高的最低无人分子轨道 (LUMO) 水平和更宽的带间隙.
三元装置实现了17.10%的功率转换效率 (PCE),超过了二元装置 (16.08%).
三元装置证明了电荷转移的改善,载体重组的减少和能量损失的降低.
BTP-PIO与Y6具有良好的混合性,形成了一种合金相,改善了相分离和分子包装.

结论:

终结Y6衍生物的组修改是开发高效的三元有机太阳能电池的有效策略.
在BTP-PIO中以甲胺为基础的终端组有助于提高设备性能.
结合BTP-PIO的二进制设备提供了一个有希望的途径来克服二进制OPV系统的局限性.

关键词:

合金阶段合金阶段有机光伏是有机的光伏.甲化物甲化物再组合的复合方式.三元制是一个三元制.

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