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Issue 7, 2017
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Environmentally friendly nitrogen-doped carbon quantum dots for next generation solar cells

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Abstract

Shine on you crazy carbon! In this work, nitrogen-doped carbon quantum dots (N-CQDs) are synthesized using a simple custom atmospheric pressure microplasma. The method is facile, rapid, and environmentally friendly and the N-CQDs can be produced in a few minutes with no need for high temperature, complicated chemical techniques, or surface ligands. The N-CQDs are formed using molecular precursors and can be produced in different solvent mixtures. Material characterization techniques show a high degree of nitrogen doping on the QD surface with the amount of nitrogen depending on initial reaction conditions. The N-CQDs show interesting quantum confined optical properties that depend on the amount of nitrogen incorporation. Importantly, the band energy structure of the N-CQDs is elucidated and they are incorporated into a photovoltaic device as the photoactive layer achieving an extraordinary open-circuit voltage of 1.8 V and a power conversion efficiency of 0.8% (champion device), amongst the highest reported to date for group IV and carbon based quantum dots.

Graphical abstract: Environmentally friendly nitrogen-doped carbon quantum dots for next generation solar cells

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Publication details

The article was received on 25 Mar 2017, accepted on 05 Jul 2017 and first published on 09 Aug 2017


Article type: Paper
DOI: 10.1039/C7SE00158D
Citation: Sustainable Energy Fuels, 2017,1, 1611-1619
  • Open access: Creative Commons BY license
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    Environmentally friendly nitrogen-doped carbon quantum dots for next generation solar cells

    D. Carolan, C. Rocks, D. B. Padmanaban, P. Maguire, V. Svrcek and D. Mariotti, Sustainable Energy Fuels, 2017, 1, 1611
    DOI: 10.1039/C7SE00158D

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