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

Darragh Carolan, Conor Rocks, Dilli Babu Padmanaban, PD Maguire, Vladimir Svrcek, D Mariotti

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1611-1619
JournalSustainable Energy Fuels
Volume1
Early online date9 Aug 2017
DOIs
Publication statusE-pub ahead of print - 9 Aug 2017

Bibliographical note

Open Access article. UIR non compliant due to manuscript indefinitely embargoed but once the deposit date was added in line with UIR the output became compliant.

Keywords

  • quantum dots

Fingerprint

Dive into the research topics of 'Environmentally friendly nitrogen-doped carbon quantum dots for next generation solar cells'. Together they form a unique fingerprint.

Cite this