Highly luminescent flexible amino-functionalized graphene quantum dots@cellulose nanofiber-clay hybrids for white-light emitting diodes

被引：76

作者：

Tetsuka, H. ^{[1
]}

Nagoya, A. ^{[1
]}

Asahi, R. ^{[1
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Frontier Res Ctr, Nagakute, Aichi 4801192, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2015年 / 3卷 / 15期

关键词：

TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; HEAT-RESISTANT; FILMS; EFFICIENT; COMPOSITE; OXIDE;

D O I：

10.1039/c5tc00250h

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amino-functionalized graphene quantum dots (afGQDs) made from graphene sheets glow bright with various colors under single-wavelength excitation, depending on their surface functional groups. These afGQDs were incorporated into a flexible and transparent clay host using electrostatic interactions between cellulose nanofiber (CNF) wrapped-afGQDs (CNF@afGQDs) and clay platelets. The resultant flexible afGQDs@CNF-clay films with a well-organized structure exhibited bright colorful photoluminescence, and were applied as a color converting material for blue light-emitting diodes (LEDs) to achieve white light emission. The af-GQDs@CNF-clay film based white LEDs showed pure white light emission with a CIE coordinate of (0.33, 0.37). The afGQDs@CNF-clay films with tunable emission are promising for use in future light emitting devices.

引用

页码：3536 / 3541

页数：6

共 21 条

[1]

Bonaccorso F, 2010, NAT PHOTONICS, V4, P611, DOI [10.1038/NPHOTON.2010.186, 10.1038/nphoton.2010.186]

[2] Flexible transparent clay films with heat-resistant and high gas-barrier properties [J].

Ebina, Takeo ;

Mizukami, Fujio .

ADVANCED MATERIALS, 2007, 19 (18) :2450-+

[3] Luminscent Graphene Quantum Dots for Organic Photovoltaic Devices [J].

Gupta, Vinay ;

Chaudhary, Neeraj ;

Srivastava, Ritu ;

Sharma, Gauri Datt ;

Bhardwaj, Ramil ;

Chand, Suresh .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (26) :9960-9963

[4] Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set [J].

Kresse, G ;

Furthmuller, J .

PHYSICAL REVIEW B, 1996, 54 (16) :11169-11186

[5] Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set [J].

Kresse, G ;

Furthmuller, J .

COMPUTATIONAL MATERIALS SCIENCE, 1996, 6 (01) :15-50

[6] Electroluminescence from Graphene Quantum Dots Prepared by Amidative Cutting of Tattered Graphite [J].

Kwon, Woosung ;

Kim, Young-Hoon ;

Lee, Chang-Lyoul ;

Lee, Minkyung ;

Choi, Hee Cheul ;

Lee, Tae-Woo ;

Rhee, Shi-Woo .

NANO LETTERS, 2014, 14 (03) :1306-1311

[7] An Electrochemical Avenue to Green-Luminescent Graphene Quantum Dots as Potential Electron-Acceptors for Photovoltaics [J].

Li, Yan ;

Hu, Yue ;

Zhao, Yang ;

Shi, Gaoquan ;

Deng, Lier ;

Hou, Yanbing ;

Qu, Liangti .

ADVANCED MATERIALS, 2011, 23 (06) :776-+

[8] Nitrogen-Doped Graphene Quantum Dots with Oxygen-Rich Functional Groups [J].

Li, Yan ;

Zhao, Yang ;

Cheng, Huhu ;

Hu, Yue ;

Shi, Gaoquan ;

Dai, Liming ;

Qu, Liangti .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (01) :15-18

[9]

Loh KP, 2010, NAT CHEM, V2, P1015, DOI [10.1038/nchem.907, 10.1038/NCHEM.907]

[10] An efficient and stable fluorescent graphene quantum dot-agar composite as a converting material in white light emitting diodes [J].

Luk, C. M. ;

Tang, L. B. ;

Zhang, W. F. ;

Yu, S. F. ;

Teng, K. S. ;

Lau, S. P. .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (42) :22378-22381

← 1 2 3 →