From Nonluminescent to Blue-Emitting Cs4PbBr6 Nanocrystals: Tailoring the Insulator Bandgap of 0D Perovskite through Sn Cation Doping

doi:10.1002/adma.201900606

	From Nonluminescent to Blue-Emitting Cs4PbBr6 Nanocrystals: Tailoring the Insulator Bandgap of 0D Perovskite through Sn Cation Doping
	Zou, Shenghan1,2,3,4,5 ; Liu, Caiping 1,2; Li, Renfu 1,2; Jiang, Feilong 1,2; Chen, Xueyuan1,2,3,4 ; Liu, Yongsheng 1,2,3; Hong, Maochun1,2,3,4
	2019-06
发表期刊	ADVANCED MATERIALS (IF:27.4[JCR-2023],30.2[5-Year])
ISSN	0935-9648
卷号	31 期号:24
发表状态	已发表
DOI	10.1002/adma.201900606
摘要	All-inorganic cesium lead halide perovskite nanocrystals (NCs) with different dimensionalities have recently fascinated the research community due to their extraordinary optoelectronic performance such as tunable bandgaps over the entire visible spectral region. However, compared to well-developed 3D CsPbX3 perovskites (X = Cl, Br, and I), the bandgap tuning in 0D Cs4PbX6 perovskite NCs remains an arduous task. Herein, a simple but valid strategy is proposed to tailor the insulator bandgap (approximate to 3.96 eV) of Cs4PbBr6 NCs to the blue spectral region by changing the local coordination environment of isolated [PbBr6](4-) octahedra in the Cs4PbBr6 crystal through Sn cation doping. Benefitting from the unique Pb2+-poor and Br--rich reaction environment, the Sn cation is successfully introduced into the Cs4PbBr6 NCs, forming coexisting point defects comprising substitutional Sn-Pb and interstitial Br-i, thereby endowing these theoretically nonluminescent Cs4PbBr6 NCs with an ultranarrow blue emission at approximate to 437 nm (full width at half maximum, approximate to 12 nm). By combining the experimental results with first-principles calculations, an unusual electronic dual-bandgap structure, comprising the newly emerged semiconducting bandgap of approximate to 2.87 eV and original insulator bandgap of approximate to 3.96 eV, is found to be the underlying fundamental reason for the ultranarrow blue emission.
关键词	blue luminescence Cs4PbBr6 impurity doping perovskite quantum dots Sn cation
收录类别	SCI ; SCIE ; EI
语种	英语
资助项目	Natural Science Foundation of Fujian Province[2017J01038]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000485478200016
出版者	WILEY-V C H VERLAG GMBH
WOS关键词	CESIUM LEAD HALIDE ; CSPBBR3 NANOCRYSTALS ; OPTICAL-PROPERTIES ; I NANOCRYSTALS ; TRANSFORMATION ; CSPBX3 ; BR ; CL ; LUMINESCENCE ; EMISSION
原始文献类型	Article
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/80241
专题	物质科学与技术学院_博士生物质科学与技术学院_特聘教授组_洪茂椿组物质科学与技术学院_特聘教授组_陈学元组
通讯作者	Liu, Yongsheng; Hong, Maochun
作者单位	1.Chinese Acad Sci, CAS Key Lab Design & Assembly Funct Nanostruct, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China 2.Chinese Acad Sci, State Key Lab Struct Chem, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 5.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Zou, Shenghan,Liu, Caiping,Li, Renfu,et al. From Nonluminescent to Blue-Emitting Cs4PbBr6 Nanocrystals: Tailoring the Insulator Bandgap of 0D Perovskite through Sn Cation Doping[J]. ADVANCED MATERIALS,2019,31(24).
APA	Zou, Shenghan.,Liu, Caiping.,Li, Renfu.,Jiang, Feilong.,Chen, Xueyuan.,...&Hong, Maochun.(2019).From Nonluminescent to Blue-Emitting Cs4PbBr6 Nanocrystals: Tailoring the Insulator Bandgap of 0D Perovskite through Sn Cation Doping.ADVANCED MATERIALS,31(24).
MLA	Zou, Shenghan,et al."From Nonluminescent to Blue-Emitting Cs4PbBr6 Nanocrystals: Tailoring the Insulator Bandgap of 0D Perovskite through Sn Cation Doping".ADVANCED MATERIALS 31.24(2019).