Journal
APPLIED SURFACE SCIENCE
Volume 434, Issue -, Pages 1079-1085Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.11.040
Keywords
Nitrogen-doped carbon quantum dots; Eichhornia crassipes; Light absorber; One-pot method
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Funding
- National Natural Science Foundation of China [51362031, 21503202, 61604143]
- Yunnan Provincial Natural Science Foundation [2017FA024]
- Shandong Provincial Natural Science Foundation [ZR2015EM024]
- Fundamental Research Funds for the Central Universities [201564002]
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Pursuit of low-cost and large-scale method to prepare carbon quantum dots (CQDs) is a persistent objective in recent years. In this work, we have successfully synthesized a series of nitrogen-doped carbon quantum dots (N-CQDs) under different hydrothermal temperature employing Eichhornia crassipes (ECs) as precursors. Considering the pollution ability to water and low-cost, this study may direct the novel path to convert waste material to useful quantum dots. After measurements such as TEM, XRD, Raman, XPS, PL as well as the UV-vis absorbance ability, outstanding optical properties have been discovered. In this fashion, solar cells are tentative to be fabricated, yielding the maximized solar-to-electrical conversion efficiency of 0.17% with a good fill factor of 67%. Meanwhile, the above-mentioned quantum dots also show the up-conversion ability, suggesting the potential application in infrared detection or broadening light-absorbing devices. (C) 2017 Elsevier B.V. All rights reserved.
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