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We report the hydrothermal synthesis of nitrogen-doped carbon dots (NCDs) and carbon sheets (NCSs) with glucose and ammonia as precursors. The formation and N-doping of NCSs were one-step obtained. NCSs are highly graphitized with six-fold symmetry single-crystal character. The optical properties of NCDs and their application as single-phase solid-state phosphors toward white light-emitting diodes...
A novel approach is demonstrated on the synthesis of hollow carbon nanospheres (HCNs) and their applications as color converter for white light-emitting diodes. HCNs were synthesized in a hydrothermal process using hexamethylenetetramine as precursor. The synthesis involves a template-less and one-step aqueous method for the first time, which enables the growth of HCNs with the temperature as low...
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