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DOI	10.1039/d0tc01027h
	High-performance blue perovskite light-emitting diodes based on the "far-field plasmonic effect" of gold nanoparticles
	Xu T.; Li W.; Wu X.; Ahmadi M.; Xu L.; Chen P.
发表日期	2020
ISSN	20507534
起始页码	6615
结束页码	6622
卷号	8 期号:19
英文摘要	Metal halide perovskites have become the next-generation electroluminescent materials due to their excellent optoelectronic properties. In the last several years, there has been tremendous progress in the performance of red and green-light perovskite electroluminescent devices (PeLEDs) with external quantum efficiencies (EQEs) exceeding 14% and 21%, respectively. In contrast, blue PeLEDs are still in their infancy, due to their EQEs of below 1%. Therefore, the development of blue PeLEDs is sorely needed since blue light plays a vital role in achieving full-color and white-light emission. In order to improve the efficiency of blue PeLEDs, herein we introduce gold nanoparticles (Au NPs) into a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole transport layer (HTL) to achieve a high performance blue PeLED with an emission wavelength of ∼475 nm. By introducing Au NPs, the optical properties of poly(ethylene oxide) (PEO):PEA2(CsPbBrxCl3-x)n-1PbBr4 perovskite films have been significantly improved leading to 3.8 times enhancement in fluorescence intensity. Based on this improvement, blue PeLEDs record a maximum luminance and EQE of ∼1110 cd m-2 and 1.64%, respectively, presenting one of the best performances among the blue PeLEDs reported so far. Finally, the PeLED performance improvement is attributed to the far-field surface plasmonic effect of Au NPs. This effect has originated from the interference between the original chromophore emission and the mirror-reflected emission of mirror-type substrates. This study not only reveals the function of Au NPs in the development of blue PeLEDs, but also offers new insights into the fundamental physics underlying the effect of surface plasmon resonance of Au NPs on perovskite light emitting devices. © 2020 The Royal Society of Chemistry.
scopus关键词	Chromophores; Conducting polymers; Efficiency; Electroluminescence; Ethylene; Fiber optic sensors; Light emitting diodes; Metal halides; Metal nanoparticles; Mirrors; Optical properties; Oxide films; Perovskite; Plasmonic nanoparticles; Plasmonics; Polyethylene oxides; Surface plasmon resonance; Electroluminescent materials; External quantum efficiency; Fluorescence intensities; Hole transport layers; Light emitting devices; Optoelectronic properties; Poly (ethylene oxide) (PEO); Poly(3 ,4-ethylenedioxythiophene):poly(styrenesulfonate); Gold nanoparticles
来源期刊	Journal of Materials Chemistry C
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176909
作者单位	School of Physical Science and Technology, Southwest University, Chongqing, 400715, China; Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, 621900, China; Key Laboratory of Science and Technology on High Energy Laser, China Academy of Engineering Physics, Mianyang, 621900, China; Joint Institute for Advanced Materials, Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, United States
推荐引用方式 GB/T 7714	Xu T.,Li W.,Wu X.,et al. High-performance blue perovskite light-emitting diodes based on the "far-field plasmonic effect" of gold nanoparticles[J],2020,8(19).
APA	Xu T.,Li W.,Wu X.,Ahmadi M.,Xu L.,&Chen P..(2020).High-performance blue perovskite light-emitting diodes based on the "far-field plasmonic effect" of gold nanoparticles.Journal of Materials Chemistry C,8(19).
MLA	Xu T.,et al."High-performance blue perovskite light-emitting diodes based on the "far-field plasmonic effect" of gold nanoparticles".Journal of Materials Chemistry C 8.19(2020).