Stable High-Performance Perovskite Solar Cells via Grain Boundary Passivation

doi:10.1002/adma.201706576

	Stable High-Performance Perovskite Solar Cells via Grain Boundary Passivation
	Zhang, Xu 1; Niu, Tianqi 2; Lu, Jing 2; Munir, Rahim 3,4; Li, Jianbo 2; Barrit, Dounya 3,4; Hu, Hanlin 3,4; Yang, Zhou 2; Amassian, Aram 3,4; Zhao, Kui 2
刊名	ADVANCED MATERIALS
	2018-04-19
卷号	30 期号:16
关键词	High Performance Passivation Effect Perovskites Semiconducting Molecules Solar Cells
ISSN号	0935-9648
DOI	10.1002/adma.201706576
文献子类	Article
英文摘要	The trap states at grain boundaries (GBs) within polycrystalline perovskite films deteriorate their optoelectronic properties, making GB engineering particularly important for stable high-performance optoelectronic devices. It is demonstrated that trap states within bulk films can be effectively passivated by semiconducting molecules with Lewis acid or base functional groups. The perovskite crystallization kinetics are studied using in situ synchrotron-based grazing-incidence X-ray scattering to explore the film formation mechanism. A model of the passivation mechanism is proposed to understand how the molecules simultaneously passivate the Pb-I antisite defects and vacancies created by under-coordinated Pb atoms. In addition, it also explains how the energy offset between the semiconducting molecules and the perovskite influences trap states and intergrain carrier transport. The superior optoelectronic properties are attained by optimizing the molecular passivation treatments. These benefits are translated into significant enhancements of the power conversion efficiencies to 19.3%, as well as improved environmental and thermal stability of solar cells. The passivated devices without encapsulation degrade only by approximate to 13% after 40 d of exposure in 50% relative humidity at room temperature, and only approximate to 10% after 24 h at 80 degrees C in controlled environment.
WOS关键词	ORGANOMETAL TRIHALIDE PEROVSKITE ; LEAD IODIDE PEROVSKITES ; HALIDE PEROVSKITES ; SINGLE-CRYSTALS ; HIGH-EFFICIENCY ; THIN-FILMS ; STABILITY ; PHOTOLUMINESCENCE ; INTERFACE ; DYNAMICS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000430460100016
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167158]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Amassian, Aram; Zhao, Kui; Liu, Shengzhong (Frank)
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, iChEM, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Shaanxi Normal Univ, Sch Mat Sci & Engn, Shaanxi Engn Lab Adv Energy Technol,Key Lab Appl, Natl Minist Educ,Shaanxi Key Lab Adv Energy Devic, Xian 710119, Shaanxi, Peoples R China 3.KAUST, KSC, Thuwal 239556900, Saudi Arabia 4.KAUST, Phys Sci & Engn Div PSE, Thuwal 239556900, Saudi Arabia
推荐引用方式 GB/T 7714	Zhang, Xu,Niu, Tianqi,Lu, Jing,et al. Stable High-Performance Perovskite Solar Cells via Grain Boundary Passivation[J]. ADVANCED MATERIALS,2018,30(16).
APA	Zhang, Xu.,Niu, Tianqi.,Lu, Jing.,Munir, Rahim.,Li, Jianbo.,...&Liu, Shengzhong .(2018).Stable High-Performance Perovskite Solar Cells via Grain Boundary Passivation.ADVANCED MATERIALS,30(16).
MLA	Zhang, Xu,et al."Stable High-Performance Perovskite Solar Cells via Grain Boundary Passivation".ADVANCED MATERIALS 30.16(2018).