Long-lived and Well-resolved Mn2+ Ion Emissions in CuInS-ZnS Quantum Dots

被引：79

作者：

Cao, Sheng ^{[1
,2
]}

Li, Chengming ^{[1
]}

Wang, Lin ^{[2
]}

Shang, Minghui ^{[2
]}

Wei, Guodong ^{[2
]}

Zheng, Jinju ^{[2
]}

Yang, Weiyou ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

[2] Ningbo Univ Technol, Inst Mat, Ningbo 315016, Zhejiang, Peoples R China

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

基金：

中国国家自然科学基金;

关键词：

SEMICONDUCTOR NANOCRYSTALS; HIGHLY EFFICIENT; PHOTOLUMINESCENCE; LUMINESCENT; MANGANESE; ROUTE; SHIFT;

D O I：

10.1038/srep07510

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：

CuInS2 (CIS) quantum dots (QDs) have tunable photoluminescence (PL) behaviors in the visible and near infrared spectral range with markedly lower toxicity than the cadmium-based counterparts, making them very promising applications in light emitting and solar harvesting. However, there still remain material- and fabrication- related obstacles in realizing the high-performance CIS-based QDs with well-resolved Mn2+ d-d emission, long emission lifetimes as well as high efficiencies. Here, we demonstrate the growth of high-quality Mn2+-doped CuInS-ZnS (CIS-ZnS) QDs based on a multi-step hot-injection strategy. The resultant QDs exhibit a well-resolved Mn2+ d-d emission with a high PL quantum yield (QY) up to 66% and an extremely long excited state lifetime up to similar to 3.78 ms, which is nearly two times longer than the longest one of "green'' QDs ever reported. It is promising that the synthesized Mn2+-doped CIS-ZnS QDs might open new doors for their practical applications in bioimaging and opto/electronic devices.

引用

页数：8

共 49 条

[31] Efficient, stable, small, and water-soluble doped ZnSe nanocrystal emitters as non-cadmium biomedical labels [J].

Pradhan, Narayan ;

Battaglia, David M. ;

Liu, Yongcheng ;

Peng, Xiaogang .

NANO LETTERS, 2007, 7 (02) :312-317

[32] Advances in Light-Emitting Doped Semiconductor Nanocrystals [J].

Pradhan, Narayan ;

Sarma, D. D. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2011, 2 (21) :2818-2826

[33] Mn-Doped Quantum Dot Sensitized Solar Cells: A Strategy to Boost Efficiency over 5% [J].

Santra, Pralay K. ;

Kamat, Prashant V. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (05) :2508-2511

[34] Emission properties of manganese-doped ZnS nanocrystals [J].

Sapra, S ;

Prakash, A ;

Ghangrekar, A ;

Periasamy, N ;

Sarma, DD .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (05) :1663-1668

[35] Multimodal Mn-doped I-III-VI quantum dots for near infrared fluorescence and magnetic resonance imaging: from synthesis to in vivo application [J].

Sitbon, Gary ;

Bouccara, Sophie ;

Tasso, Mariana ;

Francois, Aurelie ;

Bezdetnaya, Lina ;

Marchal, Frederic ;

Beaumont, Marine ;

Pons, Thomas .

NANOSCALE, 2014, 6 (15) :9264-9272

[36] Highly Luminescent Mn-Doped ZnS Nanocrystals: Gram-Scale Synthesis [J].

Srivastava, Bhupendra B. ;

Jana, Santanu ;

Karan, Niladri S. ;

Paria, Sayantan ;

Jana, Nikhil R. ;

Sarma, D. D. ;

Pradhan, Narayan .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (09) :1454-1458

[37] Photoluminescence Brightening via Electrochemical Trap Passivation in ZnSe and Mn2+-Doped ZnSe Quantum Dots [J].

Weaver, Amanda L. ;

Gamelin, Daniel R. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (15) :6819-6825

[38] Doped quantum dots for chemo/biosensing and bioimaging [J].

Wu, Peng ;

Yan, Xiu-Ping .

CHEMICAL SOCIETY REVIEWS, 2013, 42 (12) :5489-5521

[39] Luminescent and Magnetic Properties in Semiconductor Nanocrystals with Radial-Position-Controlled Mn2+ Doping [J].

Yang, Boping ;

Shen, Xingchao ;

Zhang, Huichao ;

Cui, Yiping ;

Zhang, Jiayu .

JOURNAL OF PHYSICAL CHEMISTRY C, 2013, 117 (30) :15829-15834

[40] Enhanced photoluminescence from CdS:Mn/ZnS core/shell quantum dots [J].

Yang, H ;

Holloway, PH .

APPLIED PHYSICS LETTERS, 2003, 82 (12) :1965-1967

← 1 2 3 4 5 →