Large-area color controllable remote carbon white-light light-emitting diodes. (April 2015)

• Record Type: Journal Article
• Authors: Zhang, Wenfei; Yu, Siu Fung; Fei, Linfeng; Jin, Limin; Pan, Shusheng; Lin, Peng
• Is Part Of: Carbon. Volume 85(2015)
• Page Start: 344
• Page End: 350
• Publication Date: 2015-04
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2014.12.107
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: We disperse carbon nanodots (C-dots), which can be achieved by decomposing organic acid in silane coupling agent, in epoxy oligomer to realize large-area C-dots film on any transparent substrate. Due to the similarity in solubility parameters between C-dots and epoxy resin, aggregation of C-dots in epoxy resin is suppressed. It is found that the C-dots films can support high conversion efficiency (>60%) white-light emission under 460 nm illumination. In addition, the corresponding correlated color temperature can be varied between 2500 and 10, 000 K by controlling the thickness of the C-dots film. We also verify that the absolute performance of C-dots film is compatible with that of the commercial available phosphor film.