Nitrogen-doped carbon quantum dots from biomass via simple one-pot method and exploration of their application

作者：Yang, Qiming; Duan, Jialong; Yang, Wen; Li, Xueming; Mo, Jinghui; Yang, Peizhi^*; Tang, Qunwei^*

来源：Applied Surface Science, 2018, 434: 1079-1085.

DOI：10.1016/j.apsusc.2017.11.040

• Nitrogen-doped carbon quantum dots
• Eichhornia crassipes
• Light absorber
• One-pot method

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.

• 出版日期2018-3-15
• 单位云南师范大学; 中国海洋大学