Multifunctional Ion-Lock Interface Layer Achieved by Solid–Solid Contact Approach for Stabilizing Perovskite Solar Cells

Gao，Zhi Wen1; Wang，Yong2; Jiang，Zhengyan1,3,4; Hu，Bihua3,4; Xu，Baomin3,4; Choy，Wallace C.H.1

2022

10.1002/adfm.202200473

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

It has been a hindering issue in perovskite solar cells that the interfaces between the perovskite and charge transport layers show significantly high concentrations of defects with an amount about 100 times more than inside the bulk perovskite layer. The issue causes substantial reduction in both the efficiency and stability of the devices. Herein, a solid–solid contact approach is demonstrated to realize a multifunctional ion-lock layer with strong chemical interaction to the perovskite layer. The multifunctional ion-lock layer remarkably suppresses the interface defects and tunes the work function, contributing to promoting the carrier extraction, increasing the open-circuit voltage, and enlarging the photocurrent. In addition, the multifunctional ion-lock layer successfully locks ions from movement and thus improves the stability of the devices. Finally, with a multifunctional ion-lock layer, the perovskite solar cells deliver an efficiency of up to 23.13% along with desirable long-term operational, storage, and humidity stability. Consequently, the work offers guidelines for establishing defect-suppressed interfaces between perovskites and hole transport layers.

interface ion lock Nafion planar perovskite solar cells stability

SCI ; EI

英语

NI论文

通讯

University Grant Council of the University of Hong Kong[202011159254] ; General Research Fund[17200518,17201819,17211220,17200021] ; Research Grants Council (RGC) of Hong Kong Special Administrative Region, China["C7035-20G","C5037-18G"] ; Peacock Team Project from Shenzhen Science and Technology Innovation Committee[KQTD2015033110182370] ; Shenzhen Engineering R&D Center for Flexible Solar Cells project from Shenzhen Development and Reform Committee[2019-126] ; Guangdong Basic and Applied Basic Research Foundation[2019B1515120083]

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

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

WOS:000771886700001

WILEY-V C H VERLAG GMBH

20221311845263

Defects ; Efficiency ; Ions ; Open circuit voltage ; Perovskite ; Perovskite solar cells ; Stability

Minerals:482.2 ; Solar Cells:702.3 ; Production Engineering:913.1 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85126873367

Scopus

1.Department of Electrical and Electronic Engineering,University of Hong Kong,Pokfulam Road,Hong Kong
2.Department of Physics,Chemistry and Biology (IFM),Linköping University,Linköping,58183,Sweden
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Shenzhen Engineering Research and Development Center for Flexible Solar Cells,Southern University of Science and Technology,Shenzhen,518055,China

Gao，Zhi Wen,Wang，Yong,Jiang，Zhengyan,等. Multifunctional Ion-Lock Interface Layer Achieved by Solid–Solid Contact Approach for Stabilizing Perovskite Solar Cells[J]. ADVANCED FUNCTIONAL MATERIALS,2022,32.

Gao，Zhi Wen,Wang，Yong,Jiang，Zhengyan,Hu，Bihua,Xu，Baomin,&Choy，Wallace C.H..(2022).Multifunctional Ion-Lock Interface Layer Achieved by Solid–Solid Contact Approach for Stabilizing Perovskite Solar Cells.ADVANCED FUNCTIONAL MATERIALS,32.

Gao，Zhi Wen,et al."Multifunctional Ion-Lock Interface Layer Achieved by Solid–Solid Contact Approach for Stabilizing Perovskite Solar Cells".ADVANCED FUNCTIONAL MATERIALS 32(2022).