Tuning infrared plasmon resonances in doped metal-oxide nanocrystals through cation-exchange reactions

被引：67

作者：

Liu, Zeke ^{[1
,2
]}

Zhong, Yaxu ^{[2
]}

Shafei, Ibrahim ^{[2
]}

Borman, Ryan ^{[2
]}

Jeong, Soojin ^{[2
]}

Chen, Jun ^{[2
]}

Losovyj, Yaroslav ^{[2
]}

Gao, Xinfeng ^{[2
]}

Li, Na ^{[3
,4
]}

Du, Yaping ^{[4
,5
,6
]}

Sarnello, Erik ^{[7
]}

Li, Tao ^{[7
,8
]}

Su, Dong ^{[3
]}

Ma, Wanli ^{[1
]}

Ye, Xingchen ^{[2
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Joint Int Res Lab Carbon Based Funct Mat & Device, 199 Renai Rd, Suzhou 215123, Jiangsu, Peoples R China

[2] Indiana Univ, Dept Chem, 800 East Kirkwood Ave, Bloomington, IN 47405 USA

[3] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[4] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Coll Sci, Xian 710054, Shaanxi, Peoples R China

[5] Nankai Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

[6] Nankai Univ, Natl Inst Adv Mat, Tianjin 300350, Peoples R China

[7] Northern Illinois Univ, Dept Chem & Biochem, 1425 W Lincoln Hwy, De Kalb, IL 60115 USA

[8] Argonne Natl Lab, Xray Sci Div, 9700 South Cass Ave, Lemont, IL 60439 USA

来源：

NATURE COMMUNICATIONS | 2019年 / 10卷 / 1期

关键词：

N-TYPE; COLLOIDAL SEMICONDUCTOR; TUNABLE COMPOSITION; CADMIUM-OXIDE; SURFACE; NANOPARTICLES; CHALCOGENIDE; SPECTROSCOPY; TRANSPARENT; TUNABILITY;

D O I：

10.1038/s41467-019-09165-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Metal-oxide nanocrystals doped with aliovalent atoms can exhibit tunable infrared localized surface plasmon resonances (LSPRs). Yet, the range of dopant types and concentrations remains limited for many metal-oxide hosts, largely because of the difficulty in establishing reaction kinetics that favors dopant incorporation by using the co-thermolysis method. Here we develop cation-exchange reactions to introduce p-type dopants (Cu+, Ag+, etc.) into n-type metal-oxide nanocrystals, producing programmable LSPR redshifts due to dopant compensation. We further demonstrate that enhanced n-type doping can be realized via sequential cation-exchange reactions mediated by the Cu+ ions. Cation-exchange transformations add a new dimension to the design of plasmonic nanocrystals, allowing preformed nanocrystals to be used as templates to create compositionally diverse nanocrystals with well-defined LSPR characteristics. The ability to tailor the doping profile postsynthetically opens the door to a multitude of opportunities to deepen our understanding of the relationship between local structure and LSPR properties.

引用

页数：11

共 66 条

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