Multicolor light emission and multifunctional applications in double perovskite-Cs 2 NaInCl 6 by Cu + /Sb 3+co-doping

Cai, WeidongLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten,Fudan Univ, Peoples R China (author)

Funding Agencies|Knut and Alice Wallenberg Foundation [KAW 2019.0082]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009-00971]; China Scholarship Council (CSC)
Halide double perovskites managed by metal doping approach can exhibit dual emission colors, which have been considered as promising multicolor luminescent materials. However, an independent and stable emission at yellow region is missing owing to limited doping candidates, hindering the further commercialization of multicolor luminescence applications in double perovskites. In this work, we successfully obtain stable multicolor emission with PLQE (photoluminescence quantum yield) as high as 78% through developing the CuI doping strategy in Sb-Cs2NaInCl6. By introducing a high CuI feed ratio in airtight autoclave to compete the oxidization effect, the oxidization of CuI into CuII (detrimental factor for high PLQE due to serious quenching effect) is largely suppressed. With changing the CuI feed ratio, at least four distinct emission colors ranging from blue, purple, pink to yellow can be realized via changing the excitation wavelength. Depending on tunable multicolor emission, we further demonstrate the promise of our co-doped double perovskites in anti-counterfeiting technology and multicolor lighting devices. Our results open the way for enriching the optical applications of double perovskites based on multicolor emission.

Qin, JiajunLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)jiaqi14 (author)
Ma, XinyuXi An Jiao Tong Univ, Peoples R China (author)
Wang, ShunSoochow Univ, Peoples R China (author)
Zhang, MuyiLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)muyzh47 (author)
Liu, TianjunLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)tiali66 (author)
Pang, TiqiangLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)tiapa90 (author)
Morat, JuliaLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)julmo57 (author)
Shang, YuequnLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)yuesh03 (author)
Ji, FuxiangLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)fuxji90 (author)
Yue, ShengyingXi An Jiao Tong Univ, Peoples R China (author)
Gao, FengLinköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten(Swepub:liu)fenga88 (author)
Linköpings universitetElektroniska och fotoniska material (creator_code:org_t)

By the author/editor: Cai, Weidong; Qin, Jiajun; Ma, Xinyu; Wang, Shun; Zhang, Muyi; Liu, Tianjun; show more...; Pang, Tiqiang; Morat, Julia; Shang, Yuequn; Ji, Fuxiang; Yue, Shengying; Gao, Feng; show less...

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