Ordered Superparticles with an Enhanced Photoelectric Effect by Sub-Nanometer Interparticle Distance

doi:10.1002/adfm.201701982

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Ordered Superparticles with an Enhanced Photoelectric Effect by Sub-Nanometer Interparticle Distance
	Qin, Xiaoyun; Song, Qian; Qiao, Xuezhi; Zhang, Zhen; Xue, Zhenjie; Liu, Cong; Mo, Guang; Wang, Tie; Mo G(默广); Luo, Dan
刊名	ADVANCED HEALTHCARE MATERIALS
	2017
卷号	27 期号:44 页码:1701982
关键词	electronic energy transfer QD coupling self-assembly superparticles
ISSN号	1616-301X
DOI	10.1002/adfm.201701982
文献子类	Article
英文摘要	As the development in self-assembly of nanoparticles, a main question is directed to whether the supercrystalline structure can facilitate generation of collective properties, such as coupling between adjacent nanocrystals or delocalization of exciton to achieve band-like electronic transport in a 3D assembly. The nanocrystal surfaces are generally passivated by insulating organic ligands, which block electronic communication of neighboring building blocks in nanoparticle assemblies. Ligand removal or exchange is an operable strategy for promoting electron transfer, but usually changes the surface states, resulting in performance alteration or uncontrollable aggregation. Here, 3D, supercompact superparticles with well-defined superlattice domains through a thermally controlled emulsion-based self-assembly method is fabricated. The interparticle spacing in the superparticles shrinks to approximate to 0.3 nm because organic ligands lie prone on the nanoparticle surface, which are sufficient to overcome the electron transfer barrier. The ordered and compressed superstructures promote coupling and electronic energy transfer between CdSSe quantum dots (QDs). Therefore, the acquired QD superparticles exhibit different optical properties and enhanced photoelectric activity compared to individual QDs.
电子版国际标准刊号	1616-3028
WOS关键词	QUANTUM-DOT SOLIDS ; CHARGE-TRANSPORT ; NANOCRYSTALS ; ASSEMBLIES ; NANOPARTICLES ; EMISSION
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000416035400002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285299]
专题	高能物理研究所_粒子天体物理中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Qin, Xiaoyun,Song, Qian,Qiao, Xuezhi,et al. Ordered Superparticles with an Enhanced Photoelectric Effect by Sub-Nanometer Interparticle Distance[J]. ADVANCED HEALTHCARE MATERIALS,2017,27(44):1701982.
APA	Qin, Xiaoyun.,Song, Qian.,Qiao, Xuezhi.,Zhang, Zhen.,Xue, Zhenjie.,...&Luo, Dan.(2017).Ordered Superparticles with an Enhanced Photoelectric Effect by Sub-Nanometer Interparticle Distance.ADVANCED HEALTHCARE MATERIALS,27(44),1701982.
MLA	Qin, Xiaoyun,et al."Ordered Superparticles with an Enhanced Photoelectric Effect by Sub-Nanometer Interparticle Distance".ADVANCED HEALTHCARE MATERIALS 27.44(2017):1701982.