Strongly Luminescent Dion–Jacobson Tin Bromide Perovskite Microcrystals Induced by Molecular Proton Donors Chloroform and Dichloromethane

Wang，Shixun1; Popović，Jasminka2; Burazer，Sanja2; Portniagin，Arsenii1; Liu，Fangzhou3; Low，Kam Hung4; Duan，Zonghui1; Li，Yanxiu1; Xiong，Yuan1; Zhu，Yuanming5; Kershaw，Stephen V.1; Djurišić，Aleksandra B.3; Rogach，Andrey L.1

2021-07-01

10.1002/adfm.202102182

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Lead-free 2D perovskites based on tin halide octahedron slabs with Dion–Jacobson (DJ) phases have drawn attention due to their improved stability; still, reports on light-emitting DJ lead-free perovskites are scarce. Herein, a room-temperature ligand assisted re-precipitation method is used to produce ODASnBr perovskite microcrystals (ODA denotes protonated 1,8-octanediamine). After incorporating molecular dopants chloroform and dichloromethane, not only the crystallinity of the DJ perovskite phase improves, but their emission becomes much stronger due to the formation of hydrogen bonds between [SnBr] octahedra and acidic C-H proton donors. ODASnBr microcrystals doped with these molecules show a high photoluminescence quantum yield (PLQY) approaching 90%, and their emission remains stable under a continuous UV irradiation, with less than 10% loss in intensity over 6 h. Moreover, by tuning the pristine ODASnBr with various degrees of exposure to the molecular dopants, the maximum of their self-trapped exciton emission can be fine-tuned over a spectral range of 570–608 nm while maintaining high PLQYs of 83–88%. This provides a convenient way to adjust the spectral position of DJ perovskite emission without changing halides or A-site spacers. Thus, stable and strongly emitting lead-free DJ perovskite materials have been developed.

Dion–Jacobson structure molecular dopants photoluminescence proton donors tin–bromide perovskites

SCI ; EI

英语

NI期刊

其他

WOS:000645079200001

20211810281963

Bromine compounds ; Crystallinity ; Dichloromethane ; Hydrogen bonds ; Irradiation ; Light emission ; Microcrystals ; Perovskite ; Precipitation (chemical)

Minerals:482.2 ; Light/Optics:741.1 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Organic Compounds:804.1 ; Crystalline Solids:933.1

MATERIALS SCIENCE

2-s2.0-85109395307

Scopus

1.Department of Materials Science and Engineering,and Centre for Functional Photonics (CFP),City University of Hong Kong,Hong Kong
2.Division of Materials Physics,Laboratory for Synthesis and Crystallography of Functional Materials,Ruđer Bošković Institute,Zagreb,10000,Croatia
3.Department of Physics,The University of Hong Kong,Hong Kong
4.Department of Chemistry,The University of Hong Kong,Hong Kong
5.SUSTech Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology of China,Shenzhen,518055,China

Wang，Shixun,Popović，Jasminka,Burazer，Sanja,等. Strongly Luminescent Dion–Jacobson Tin Bromide Perovskite Microcrystals Induced by Molecular Proton Donors Chloroform and Dichloromethane[J]. ADVANCED FUNCTIONAL MATERIALS,2021,31(28).

Wang，Shixun.,Popović，Jasminka.,Burazer，Sanja.,Portniagin，Arsenii.,Liu，Fangzhou.,...&Rogach，Andrey L..(2021).Strongly Luminescent Dion–Jacobson Tin Bromide Perovskite Microcrystals Induced by Molecular Proton Donors Chloroform and Dichloromethane.ADVANCED FUNCTIONAL MATERIALS,31(28).

Wang，Shixun,et al."Strongly Luminescent Dion–Jacobson Tin Bromide Perovskite Microcrystals Induced by Molecular Proton Donors Chloroform and Dichloromethane".ADVANCED FUNCTIONAL MATERIALS 31.28(2021).