Quenching Detrimental Reactions and Boosting Hole Extraction via Multifunctional NiOx/Perovskite Interface Passivation for Efficient and Stable Inverted Solar Cells

Jiang，Zhengyan1,2; Wang，Deng1; Sun，Jiayun2; Hu，Bihua1; Zhang，Luozheng1; Zhou，Xianyong1; Wu，Jiawen1; Hu，Hang1; Zhang，Jiyao1; Choy，Wallace C.H.2; Xu，Baomin1,3

2023

10.1002/smtd.202300241

Small Methods   影响因子和分区

2366-9608

2366-9608

Nickel oxide (NiO) is one of the most promising hole transport materials for inverted perovskite solar cells (PSCs). However, its application is severely restrained due to unfavorable interfacial reactions and insufficient charge carrier extraction. Herein, a multifunctional modification at the NiO/perovskite interface is developed via introducing fluorinated ammonium salt ligand to synthetically solve the obstacles. Specifically, the interface modification can chemically convert detrimental Ni to lower oxidation state, resulting in the elimination of interfacial redox reactions. Meanwhile, interfacial dipole is incorporated simultaneously to tune the work function of NiO and optimize energy level alignment, which effectively promotes the charge carrier extraction. Therefore, the modified NiO-based inverted PSCs achieve a remarkable power conversion efficiency (PCE) of 22.93%. Moreover, the unencapsulated devices obtain a significantly enhanced long-term stability, maintaining over 85% and 80% of the initial PCEs after storage in ambient air with a high relative humidity of 50–60% for 1000 h and continuous operation at maximum power point under one-sun illumination for 700 h, respectively.

carrier extraction defect passivation interficial reaction inverted perovskite solar cells nickel oxide

SCI ; EI

英语

第一 ; 通讯

National Key Research and Development Project from the Ministry of Science and Technology of China["2021YFB3800100","2021YFB3800101"] ; National Natural Science Foundation of China["52073173","U19A2089","61904076"] ; Basic and Applied Basic Research Foundation of Guangdong Province[2020A1515010980] ; Shenzhen Science and Technology Innovation Committee["JCYJ20200109141014474","JCYJ20190809150213448"] ; Hong Kong Special Administrative Region, China["17201819","17211220","17200021","ITS/277/21FP"] ; null[C7035-20G] ; null[C5037-18G] ; null[MRP/040/21X]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000996012500001

WILEY-V C H VERLAG GMBH

20232214164430

Charge carriers ; Conversion efficiency ; Extraction ; Interface states ; Passivation ; Perovskite ; Perovskite solar cells ; Redox reactions

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Protection Methods:539.2.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Solar Cells:702.3 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Classical Physics; Quantum Theory; Relativity:931 ; High Energy Physics; Nuclear Physics; Plasma Physics:932

2-s2.0-85160286558

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Electrical and Electronic Engineering,The University of Hong Kong,999077,Hong Kong
3.Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong,Southern University of Science and Technology,Shenzhen,518055,China

Jiang，Zhengyan,Wang，Deng,Sun，Jiayun,et al. Quenching Detrimental Reactions and Boosting Hole Extraction via Multifunctional NiOx/Perovskite Interface Passivation for Efficient and Stable Inverted Solar Cells[J]. Small Methods,2023.

Jiang，Zhengyan.,Wang，Deng.,Sun，Jiayun.,Hu，Bihua.,Zhang，Luozheng.,...&Xu，Baomin.(2023).Quenching Detrimental Reactions and Boosting Hole Extraction via Multifunctional NiOx/Perovskite Interface Passivation for Efficient and Stable Inverted Solar Cells.Small Methods.

Jiang，Zhengyan,et al."Quenching Detrimental Reactions and Boosting Hole Extraction via Multifunctional NiOx/Perovskite Interface Passivation for Efficient and Stable Inverted Solar Cells".Small Methods (2023).