气候变化领域集成服务门户(CCPortal): Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes

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DOI	10.1021/acsphotonics.0c00497
	Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes
	Gao C.; Jiang Y.; Sun C.; Han J.; He T.; Huang Y.; Yao K.; Han M.; Wang X.; Wang Y.; Gao Y.; Liu Y.; Yuan M.; Liang H.
发表日期	2020
ISSN	23304022
起始页码	1915
结束页码	1922
卷号	7 期号:8
英文摘要	Tin halide perovskites are promising lead-free candidates for light-emitting diodes (LEDs), but their performance is hindered by the poor crystallinity quality and the oxidation of tin. It is necessary but challenging to simultaneously realize modulating crystallization, suppressing oxidation, and passivating defects to boost the device's performance. Here, naphthol sulfonic salt is demonstrated as an effective multifunctional additive. The sulfonic group can retard crystallization by forming intermediate complexes with perovskite to form a pinhole-free film. The reducing hydroxyl group can prevent Sn2+ from oxidation and hinder the migration of I- ions. The high electron density of the naphthol ring can enhance the electrostatic attraction toward undercoordinated Sn2+ to passivate the defects. The synergistic effect of the multifunctional additive contributes to a boosted efficiency of 0.72% and a brightness of 132 cd m-2 for quantum-well structure phenethylammonium tin iodide ((PEA)2SnI4) LEDs, which represents the most effective lead-free perovskite LEDs in pure-red regions as far as we know. © 2020 American Chemical Society.
英文关键词	antioxidant; interfacial passivation; naphthol sulfonic salt additive; perovskite light-emitting diodes; pure-red emission; tin-based halide perovskites
scopus关键词	Additives; Crystallinity; Defects; Light emitting diodes; Naphthol; Oxidation; Perovskite; Semiconductor quantum wells; Electrostatic attractions; High-electron-density; Intermediate complex; Lead-free perovskites; Multifunctional additives; Poor crystallinity; Quantum well structures; Synergistic effect; Tin compounds
来源期刊	ACS Photonics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176836
作者单位	School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China; Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education, College of Chemistry, Nankai University, Tianjin, 300071, China; State Key Lab for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Gao C.,Jiang Y.,Sun C.,et al. Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes[J],2020,7(8).
APA	Gao C..,Jiang Y..,Sun C..,Han J..,He T..,...&Liang H..(2020).Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes.ACS Photonics,7(8).
MLA	Gao C.,et al."Multifunctional Naphthol Sulfonic Salt Incorporated in Lead-Free 2D Tin Halide Perovskite for Red Light-Emitting Diodes".ACS Photonics 7.8(2020).