气候变化领域集成服务门户(CCPortal): In situ induced core/shell stabilized hybrid perovskites via gallium(III) acetylacetonate intermediate towards highly efficient and stable solar cells

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DOI	10.1039/c7ee03113k
	In situ induced core/shell stabilized hybrid perovskites via gallium(III) acetylacetonate intermediate towards highly efficient and stable solar cells
	Li W.; Zhang C.; Ma Y.; Liu C.; Fan J.; Mai Y.; Schropp R.E.I.
发表日期	2018
ISSN	17545692
起始页码	286
结束页码	293
卷号	11 期号:2
英文摘要	Long-term stability of perovskite solar cells appears to be the bottleneck that limits its large-scale industrialization. Herein, we innovatively introduce gallium(iii) acetylacetonate (GaAA3) as the precursor additive to in situ induce a metal-organic-complex monomolecular intermediate ([GaAA3]4), which allows to realize CsxFA1-xPbI3-[GaAA3]4 (0 < x < 1) hybrid perovskite materials. The formed hybrid perovskites are proven to possess a thus far unreported structure with CsxFA1-xPbI3 core and [GaAA3]4 shell, and the presence of thin [GaAA3]4 shells remarkably enhances the hydrophobicity of the perovskite thin films. As a result of an effective passivation effect by the core/shell heterostructure, the formed perovskites demonstrate superior photoelectronic performance in comparison with the independent archetype 3-dimensional (3D) counterparts, e.g., they show low defect-state density, strong luminescence, and long lifetime of photo-generation charge carriers, which finally result in a high power conversion efficiency of 18.24% for core-shell planar perovskite solar cells. Equally important, the stabilized power output (SPO) of the unencapsulated cell remains over 18% for 5 h in an adverse atmosphere with 50% relative humidity (RH). The present study provides a facile approach to fabricate core-shell perovskite solar cells with high efficiency and long-term stability against moisture. © 2018 The Royal Society of Chemistry.
英文关键词	Defect density; Efficiency; Gallium compounds; Hybrid materials; Organometallics; Perovskite; Shells (structures); Solar cells; Defect state density; High power conversion; Long term stability; Metal-organic complexes; Passivation effect; Perovskite thin films; Photo generation; Strong luminescence; Perovskite solar cells; additive; energy efficiency; film; fuel cell; gallium; hydrophobicity; in situ test; innovation; perovskite; relative humidity
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190316
作者单位	Institute of New Energy Technology, College of Information Science and Technology, Jinan University, Guangzhou, 510632, China; Institute of Photovoltaics, College of Physics Science and Technology, Hebei University, Baoding, 071002, China; Debye Institute for Nanomaterials Science, Utrecht University, P.O. Box 80000, Utrecht, 3508 TA, Netherlands
推荐引用方式 GB/T 7714	Li W.,Zhang C.,Ma Y.,et al. In situ induced core/shell stabilized hybrid perovskites via gallium(III) acetylacetonate intermediate towards highly efficient and stable solar cells[J],2018,11(2).
APA	Li W..,Zhang C..,Ma Y..,Liu C..,Fan J..,...&Schropp R.E.I..(2018).In situ induced core/shell stabilized hybrid perovskites via gallium(III) acetylacetonate intermediate towards highly efficient and stable solar cells.Energy & Environmental Science,11(2).
MLA	Li W.,et al."In situ induced core/shell stabilized hybrid perovskites via gallium(III) acetylacetonate intermediate towards highly efficient and stable solar cells".Energy & Environmental Science 11.2(2018).