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

Carolan, Darragh, Rocks, Conor, Padmanaban, Dilli Babu, Maguire, PD, Svrcek, Vladimir and Mariotti, D (2017) Environmentally friendly nitrogen-doped carbon quantum dots for next generation solar cells. Sustainable Energy Fuels, 1 . pp. 1611-1619. [Journal article]

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URL: http://dx.doi.org/10.1039/C7SE00158D

DOI: 10.1039/C7SE00158D

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.

Item Type:Journal article
Keywords:quantum dots
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:38514
Deposited By: Professor Davide Mariotti
Deposited On:05 Sep 2017 10:52
Last Modified:15 Nov 2018 16:55

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