Organic Photovoltaics Printed via Sheet Electrospray Enabled by Quadrupole Electrodes

Kai Chang1,2; Yaxing Li1; Huihui Xia1; Jingyu Chang1; Boyang Yu1; Gengxin Du1; Ping Yang1,2; Xinyan Zhao1,3; Baoxiu Mi2; Wei Huang2,4; Weiwei Deng1

2021-11-18

10.1021/acsami.1c14104

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Developing manufacturing methods that are scalable and compatible with a roll-to-roll process with low waste of material has become a pressing need to transfer organic photovoltaics (OPVs) to a viable renewable energy source. For this purpose, various spray printing methods have been proposed. Among them, electrospray (ES) is an attractive option due to its negligible material waste, tunable droplet size, and tolerance to the substrate defects and roughness. Conventional ES with a circular spray footprint often makes the droplets well separated and unlikely to merge, giving rise to "coffee rings" which cause a rough and flawed film morphology. Here, a quadrupole electrode is introduced to generate a compressing electric field that squeezes the conical ES profile into the shape of a thin sheet. The numerical simulation and experimental data of the trajectories of sprayed droplets show that the quadrupole apparatus can effectively increase the long axis to short axis ratio of the oval spray footprint and hence bring droplets closer to each other and make the merging more likely for the deposited droplets. By promoting the merging of droplets, individual coffee rings are also suppressed. Thus, the quadrupole ES offers untapped opportunities for effectively reducing voids and improving the flatness of the ES-printed active layer. The devices with a PM6:N3 active layer printed by the sheet ES exhibited the highest power conversion efficiency (PCE) of up to 15.98%, which is a noticeable improvement over that (14.85%) of counterparts fabricated by a conventional conical ES. This is the highest PCE reported for ES-printed OPVs and is one of the most efficient spray-deposited OPVs so far. In addition, the all-spray-printed devices reached a PCE of 14.55%, which is also among the most efficient all-spray-printed OPVs.

organic photovoltaics electrospray printing non-fullerene acceptor morphology scalable fabrication quadrupole electrospray

SCI ; EI

英语

通讯

National Natural Science Foundation of China[61975073,11932009]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000751894800056

AMER CHEMICAL SOC

20214811242112

Drops ; Electric fields ; Electrodes ; Merging ; Morphology ; Renewable energy resources

Energy Resources and Renewable Energy Issues:525.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

人工提交

1.Institute of Advanced Materials (IAM), Key Laboratory for Organic Electronics & Information Displays (KLOEID), Nanjing University of Posts & Telecommunications (NUPT)
2.Institute of Advanced Materials (IAM), Key Laboratory for Organic Electronics & Information Displays (KLOEID), Nanjing University of Posts & Telecommunications (NUPT)
3.Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech)
4.Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech)

Kai Chang,Yaxing Li,Huihui Xia,et al. Organic Photovoltaics Printed via Sheet Electrospray Enabled by Quadrupole Electrodes[J]. ACS Applied Materials & Interfaces,2021,13(47):56375-56384.

Kai Chang.,Yaxing Li.,Huihui Xia.,Jingyu Chang.,Boyang Yu.,...&Weiwei Deng.(2021).Organic Photovoltaics Printed via Sheet Electrospray Enabled by Quadrupole Electrodes.ACS Applied Materials & Interfaces,13(47),56375-56384.

Kai Chang,et al."Organic Photovoltaics Printed via Sheet Electrospray Enabled by Quadrupole Electrodes".ACS Applied Materials & Interfaces 13.47(2021):56375-56384.