Langmuir-Blodgett self-assembly of ultrathin graphene quantum dot films with modulated optical properties | |
Wang, JY; Yan, H; Liu, ZQ; Wang, ZC; Gao, HN; Zhang, ZJ; Wang, BL; Xu, N; Zhang, SQ; Liu, XJ | |
刊名 | NANOSCALE |
2018 | |
卷号 | 10期号:41页码:19612 |
关键词 | Solar-cells Carbon Dots Oxide Nanoribbons Sheets Light Photoluminescence Nanoparticles Conductivity Transparent |
ISSN号 | 2040-3364 |
DOI | 10.1039/c8nr05159c |
文献子类 | Article |
英文摘要 | Multiple-color-emissive graphene quantum dots (GQDs) have great potential in diverse applications such as bioimaging, light emission, and photocatalysis. Growing interest in GQDs is largely focused on their macro-scale aggregations that could inherit the unique properties of individual dots. However, the lack of advanced fabrication methods limits the practical applications of GQDs. Here, we employed a Langmuir-Blodgett (LB) technique to fabricate ultrathin, high-quality GQD aggregated films with well-modulated optical properties in a wide range of wavelengths. Through the combination of a bottom-up synthesis of GQDs and the LB assembly method, uniform, closely packed, and ultra-thin GQD films can be self-assembled with a well-controlled thickness on different substrates. The photoluminescence (PL) spectra of ultra-thin GQD films have an obvious red-shift compared with isolated GQD solution. We then elucidate remarkably strong energy transfer in self-assembled GQDs. Furthermore, the ultra-thin GQD films exhibit a clear excitation-dependent PL that could almost cover the entire visible light. This convenient self-assembly method and systematic optical and physical studies of ultra-thin GQD films may provide a new direction for developing low-cost, GQD film-based light-emitting devices. |
WOS记录号 | WOS:000448663400040 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/26785] |
专题 | 中国科学院过程工程研究所 |
推荐引用方式 GB/T 7714 | Wang, JY,Yan, H,Liu, ZQ,et al. Langmuir-Blodgett self-assembly of ultrathin graphene quantum dot films with modulated optical properties[J]. NANOSCALE,2018,10(41):19612. |
APA | Wang, JY.,Yan, H.,Liu, ZQ.,Wang, ZC.,Gao, HN.,...&Sun, Xiaodan.(2018).Langmuir-Blodgett self-assembly of ultrathin graphene quantum dot films with modulated optical properties.NANOSCALE,10(41),19612. |
MLA | Wang, JY,et al."Langmuir-Blodgett self-assembly of ultrathin graphene quantum dot films with modulated optical properties".NANOSCALE 10.41(2018):19612. |
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