Green and simple route toward boron doped carbon dots with significantly enhanced non-linear optical properties

被引：297

作者：

Bourlinos, Athanasios B. ^{[1
,4
,6
]}

Trivizas, Georgios ^{[1
]}

Karakassides, Michael A. ^{[2
]}

Baikousi, Maria ^{[2
]}

Kouloumpis, Antonios ^{[2
]}

Gournis, Dimitrios ^{[2
]}

Bakandritsos, Aristides ^{[3
]}

Hola, Katerina ^{[4
,6
]}

Kozak, Ondrej ^{[4
,6
]}

Zboril, Radek ^{[4
,6
]}

Papagiannouli, Irene ^{[5
]}

Aloukos, Panagiotis ^{[5
]}

Couris, Stelios ^{[5
]}

机构：

[1] Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece

[2] Univ Ioannina, Dept Mat Sci & Engn, GR-45110 Ioannina, Greece

[3] Univ Patras, Dept Mat Sci, Patras 26504, Greece

[4] Palacky Univ, Dept Phys Chem, Fac Sci, Reg Ctr Adv Technol & Mat, Olomouc 77146, Czech Republic

[5] Univ Patras, Dept Phys, Patras 26504, Greece

[6] Fdn Res & Technol Hellas FORTH, Inst Chem Engn Sci ICE HT, Patras 26504, Greece

来源：

CARBON | 2015年 / 83卷

关键词：

GRAPHENE QUANTUM DOTS; LIGHT-EMITTING-DIODES; THIN-FILMS; WHITE LEDS; NITROGEN; NANODOTS; FACILE; PHOTOLUMINESCENCE; NANOPARTICLES; NANOCRYSTALS;

D O I：

10.1016/j.carbon.2014.11.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Microwave heating of an aqueous solution of citric acid, boric acid and urea affords boron-doped carbon dots (C-dots) with ultrafine size (2-6 nm) and quasi-spherical shape. The new dots are freely dispersible in water providing stable, optically transparent dispersions with olive-green color. The optical properties of the dots were studied in respect to their photoluminescence and nonlinear optical response. Boron-doped C-dots exhibit absorption-emission features that strongly resemble the optical properties of conventional quantum dots with a strong blue fluorescence under UV excitation. Importantly, we demonstrate for the first time that boron doping in C-dots causes a significant enhancement of the nonlinear optical response compared to un-doped carbon dots. This result is in line with previous studies reporting a similar effect on the non-linear optical properties of boron-doped silicon nanocrystals. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：173 / 179

页数：7

共 46 条

[1]

Third-order nonlinear optical response and optical limiting of colloidal carbon dots [J].