Stabilization of alpha-phase FAPbI(3) via Buffering Interfacial Region for Efficient p-i-n Perovskite Solar Cells

Huang, Yulan1,2; Wang, Bingzhe2; Liu, Tanghao3; Li, Dongyang1; Zhang, Yujie1; Zhang, Tianqi2; Yao, Xiyu1; Wang, Yun1; Amini, Abbas4; Cai, Yongqing2; Xu, Baomin1; Tang, Zikang2; Xing, Guichuan2; Cheng, Chun1

2023-06-01

10.1002/adfm.202302375

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Formamidinium lead triiodide (FAPbI(3)) with an ideal bandgap and good thermal stability has received wide attention and achieved a record efficiency of 26% in n-i-p (regular) perovskite solar cells (PSCs). However, imperfect FAPbI(3) formation on the typical hole transport layer (HTL), high interfacial trap-state density, and unfavorable energy alignment between the HTL and FAPbI(3) result in the inferior photovoltaic performance of p-i-n (inverted) PSCs with FAPbI(3) absorber. Herein, the alpha-phase FAPbI(3) is stabilized by constructing a buffer interface region between the NiOx HTL and FAPbI(3), which not only diminishes NiOx/FAPbI(3) interfacial reactions and defects but also facilitates carrier transport. Upon the construction of a buffer interface region, FAPbI(3) inverted PSC exhibits a high-power conversion efficiency of 23.56% (certified 22.58%) and excellent stability, retaining 90.7% of its initial efficiency after heating at 80 degrees C for 1000 h and 84.6% of the initial efficiency after operating at the maximum power point under continuous illumination for 1100 h. Besides, as a light-emitting diode device, the FAPbI(3) inverted PSC can be directly lit with an external quantum efficiency of 1.36%. This study provides a unique and efficient strategy to advance the application of alpha-phase FAPbI(3) in inverted PSCs.

buffer interface region dual-functional device FAPbI(3) high efficiency inverted perovskite solar cells

SCI ; EI

英语

NI论文

第一 ; 通讯

Natural Science Foundation of China["61935017","62175268"] ; Shenzhen-Hong Kong-Macao Science and Technology Innovation Project (Category C)[SGDX2020110309360100] ; Science and Technology Development Fund, Macao SAR["FDCT-0044/2020/A1","FDCT-0082/2021/A2","0010/2022/AMJ","006/2022/ALC"] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; UM's research fund[2022G02] ; Wuyi University[pdjh2023b0460] ; Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation["MYRG2022-00241-IAPME","MYRG-CRG2020-00009-FHS","2022G01"] ; null[EF38/IAPME-XGC/2022/WYU] ; null[pdjh2022c005] ; null[pdjh2023c20903] ; null[MYRG2020-00151-IAPME]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001004598200001

WILEY-V C H VERLAG GMBH

20232414214633

Conversion efficiency ; Lead compounds ; Nickel compounds ; Perovskite

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Solar Cells:702.3

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Ave da Univ, Taipa 999078, Macau, Peoples R China
3.Hong Kong Baptist Univ, Dept Phys, Kowloon, Hong Kong 999077, Peoples R China
4.Western Sydney Univ, Ctr Infrastruct Engn, Kingswood, NSW 2751, Australia

Huang, Yulan,Wang, Bingzhe,Liu, Tanghao,et al. Stabilization of alpha-phase FAPbI(3) via Buffering Interfacial Region for Efficient p-i-n Perovskite Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2023,33(40).

Huang, Yulan.,Wang, Bingzhe.,Liu, Tanghao.,Li, Dongyang.,Zhang, Yujie.,...&Cheng, Chun.(2023).Stabilization of alpha-phase FAPbI(3) via Buffering Interfacial Region for Efficient p-i-n Perovskite Solar Cells.ADVANCED FUNCTIONAL MATERIALS,33(40).

Huang, Yulan,et al."Stabilization of alpha-phase FAPbI(3) via Buffering Interfacial Region for Efficient p-i-n Perovskite Solar Cells".ADVANCED FUNCTIONAL MATERIALS 33.40(2023).