Influence of thermal annealing on the charge generation and transport in PM6-based non-fullerene solar cells

被引：1
|
作者：
Hu, Rong [1 ,3 ]
Liu, Yurong [1 ]
Tian, Liangliang [1 ]
Zhang, Wei [2 ]
He, Xiaochuan [4 ]
机构：
[1] Chongqing Univ Arts & Sci, Sch Mat Sci & Engn, Chongqing 402160, Peoples R China
[2] Guangzhou Univ, Sch Phys & Elect Engn, Guangzhou 510006, Peoples R China
[3] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610065, Peoples R China
[4] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2021年 / 32卷 / 18期
基金：
中国国家自然科学基金;
关键词：
MORPHOLOGY; PERFORMANCE; BLEND;
D O I：
10.1007/s10854-021-06765-x
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
To study the influence of thermal annealing on the charge generation and transport in PM6-based non-fullerene solar cells. Morphology, optical and electrochemical properties of active layers as well as electrical properties of polymer solar cells were studied. Furthermore, the photoelectric conversion processes of annealed and unannealed devices were also examined by means of time resolved spectroscopy. The results showed that thermal annealing had a weak influence on the dynamics of exciton states. Besides, annealed device is found to suppress bimolecular recombination owing to its higher charge carrier mobility in ordered donor and acceptor aggregation phases, which led to higher photocurrent and power conversion efficiency than unannealed photovoltaic device.
引用
收藏
页码：22879 / 22889
页数：11
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