Red C-dots and C-dot films: solvothermal synthesis, excitation-independent emission and solid-state-lighting.

ABSTRACT: Currently, fluorescent carbon dots (CDs) have attracted great attention for their unique optical performance. However, the shortage of red emissive CDs and the corresponding CD solid samples with intense luminescence significantly limit their applications in optoelectronic fields. In the present work, red fluorescence CDs were successfully synthesized via a facile solvothermal reaction using p-phenylenediamine as the carbon source and isopropanol as the solvent. Excitation-independent luminescence and emission-independent decay indicated that one dominant type of emissive state was responsible for red luminescence, which was evidenced to be a N-related surface defect state with the help of structural and spectroscopic characterizations. Furthermore, CD-embedded PVA solid film

SUBMITTER: Chen D 

PROVIDER: S-EPMC9085415 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature