Abstract
The microstructure of the active layer in organic photovoltaics(OPVs),such as the size of phase separa-tion,purity of the phases,and molecular packing within each phase,plays a crucial role in influencing the behavior of excitons and charge carriers within the active layer.It is also a key determinant of the photovoltaic performance of the device.During the optimization of OPV devices,the use of additives has been demonstrated to be an effective strategy in microstructure control,leading to enhanced per-formance.Therefore,the quest for stable and efficient novel additives,along with an exploration and summarization of the mechanisms underlying additive-induced microstructure control,is essential for a better understanding of the developmental trends of high-performance additives.In this review,we cat-egorize additives based on their chemical structures and discuss their effects on the microstructure of the active layer from both thermodynamic and kinetic perspectives.Furthermore,we elaborate on the working mechanisms and their impact on the photovoltaic performance of the devices.This review pro-vides an overview of recent advances in additives for OPVs,offering potential guidance for the future development of additives and further optimization of the active layer in photovoltaic devices.
基金项目
National Natural Science Foundation of China(52303226)
National Natural Science Foundation of China(21971049)
Zhejiang Provincial Natural Science Foundation(LQ23E030002)
Zhejiang Provincial Natural Science Foundation(LZ23B040001)
"Tenthousand Talents Plan"of Zhejiang Province(2019R52040)
NETL
NSTL
万方数据