Micromolecule Postdeposition Process for Highly Efficient Inverted Perovskite Solar Cells

被引:0
|
作者
Li, Bing'e [1 ]
Xing, Jiangping [1 ]
Budnik, Valeriya [2 ]
Liu, Chuangping [1 ]
Cao, Qinghua [1 ]
Xie, Fobao [1 ]
Zhang, Xiaoli [1 ]
Liu, Hui [1 ]
Stsiapanau, Andrei [2 ]
Sun, Xiao Wei [3 ]
机构
[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangdong Prov Key Lab Sensing Phys & Syst Integra, Guangzhou 510006, Peoples R China
[2] Belarusian State Univ Informat & Radioelect BSUIR, Dept Micro & Nanoelect, Minsk 220013, BELARUS
[3] Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
关键词
micromolecule postdeposition process; reducing vacanciesat the interface; hole transport layer; facilitatingthe growth of perovskites; perovskites solar cells; PERFORMANCE; LAYER;
D O I
暂无
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Inverted perovskite solar cells (PSCs) have achieved great development, contributed by the advance of self-assembled monolayer (SAM) hole-transporting layers (HTLs) due to their distinctive molecular designability. However, SAM HTLs still present challenges of achieving a compact and ordered surface, resulting in vacancies and defects at the interface as well as adversely affecting the growth of perovskites. In this work, we propose a micromolecule postdeposition process to design the SAM HTL interface and form high-quality perovskites to achieve highly efficient inverted PSCs. We introduce etidronic acid (EA) as a postdeposition micromolecule to fill and reduce vacancies at the SAM interface and to improve growing high-quality perovskites. The postdeposition EA can anchor to the substrate through P-OH anchors, occupying vacancies left by MeO-4PACz, and simultaneously create interaction with perovskites by P=O and C-OH functional groups. The micromolecule postdeposition process effectively fills and reduces vacancies at the SAM interface, passivates defects of perovskites, and facilitates carrier transport. Consequently, a champion PCE of 24.42% is achieved for the target PSCs, which is much higher than the efficiency (20.08%) of the control. This research provides a guided and widely applicable strategy for the development of the SAM interface and further advances the performance of PSCs.
引用
收藏
页码:14269 / 14277
页数:9
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