Guangchuan Zhong, Guoqiang Yuan, Boyang Li, Langwen Qiu, Yan Zhang, Guanwei Sun, Zhao Chen, Fanyuan Meng, Shi-Jian Su
{"title":"High-Performance Zinc-Lead Alloy Green Quasi-2D Perovskite Light-Emitting Diodes","authors":"Guangchuan Zhong, Guoqiang Yuan, Boyang Li, Langwen Qiu, Yan Zhang, Guanwei Sun, Zhao Chen, Fanyuan Meng, Shi-Jian Su","doi":"10.1002/adom.202402360","DOIUrl":null,"url":null,"abstract":"<p>Lead-based perovskite light-emitting diodes (PeLEDs) is gaining significant attention for their outstanding optoelectronic properties. However, the intrinsic lead toxicity in these materials presents serious environmental and health risks, limiting their further development. Here, highly efficient zinc-lead alloy quasi-2D perovskites are developed through Zn<sup>2+</sup> substitution and additive engineering. The Zn<sup>2+</sup> substitution improves tolerance factors, increases radiative recombination rates, and suppresses nonradiative recombination, thereby enhancing stability. Additionally, [bis(4-methoxyphenyl) phosphinyloxy]carbamic acid <i>tert</i>-butyl ester (BPCA) additive effectively passivates bromine vacancy defects and improves film quality. The successful Zn<sup>2+</sup> substitution and additive passivation strategy results in a significantly increased photoluminescence quantum yield from 4.3 to 85.6%. Consequently, high-performance zinc-lead alloy green PeLEDs are achieved with a maximum current efficiency of 54.35 cd A<sup>−1</sup> and a peak external quantum efficiency of 22.49%, representing the highest performance among green PeLEDs with partial lead substitution. Moreover, the T<sub>50</sub> lifetime of Zn-Lead alloy PeLEDs is ≈8.9 times longer than that of the pristine PeLEDs. The approach not only mitigates lead toxicity but also improves device efficiency and stability, representing a significant advancement toward safer and more sustainable perovskite-based optoelectronic devices.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 7","pages":""},"PeriodicalIF":8.0000,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Optical Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adom.202402360","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Lead-based perovskite light-emitting diodes (PeLEDs) is gaining significant attention for their outstanding optoelectronic properties. However, the intrinsic lead toxicity in these materials presents serious environmental and health risks, limiting their further development. Here, highly efficient zinc-lead alloy quasi-2D perovskites are developed through Zn2+ substitution and additive engineering. The Zn2+ substitution improves tolerance factors, increases radiative recombination rates, and suppresses nonradiative recombination, thereby enhancing stability. Additionally, [bis(4-methoxyphenyl) phosphinyloxy]carbamic acid tert-butyl ester (BPCA) additive effectively passivates bromine vacancy defects and improves film quality. The successful Zn2+ substitution and additive passivation strategy results in a significantly increased photoluminescence quantum yield from 4.3 to 85.6%. Consequently, high-performance zinc-lead alloy green PeLEDs are achieved with a maximum current efficiency of 54.35 cd A−1 and a peak external quantum efficiency of 22.49%, representing the highest performance among green PeLEDs with partial lead substitution. Moreover, the T50 lifetime of Zn-Lead alloy PeLEDs is ≈8.9 times longer than that of the pristine PeLEDs. The approach not only mitigates lead toxicity but also improves device efficiency and stability, representing a significant advancement toward safer and more sustainable perovskite-based optoelectronic devices.
期刊介绍:
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.