title: Combination of carbon dot and polymer dot phosphors for white light-emitting diodes.
abstract: We realized white light-emitting diodes with high color rendering index (85-96) and widely variable color temperatures (2805-7786 K) by combining three phosphors based on carbon dots and polymer dots, whose solid-state photoluminescence self-quenching was efficiently suppressed within a polyvinyl pyrrolidone matrix. All three phosphors exhibited dominant absorption in the UV spectral region, which ensured the weak reabsorption and no energy transfer crosstalk. The WLEDs showed excellent color stability against the increasing current because of the similar response of the tricolor phosphors to the UV light variation.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. yuzhang@jlu.edu.cn cwu@jlu.edu.cn.
authors.forename: Chun
authors.initials: C
authors.lastname: Sun
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.forename: Kai
authors.initials: K
authors.lastname: Sun
authors.forename: Claas
authors.initials: C
authors.lastname: Reckmeier
authors.forename: Tieqiang
authors.initials: T
authors.lastname: Zhang
authors.forename: XiaoYu
authors.initials: X
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.forename: Changfeng
authors.initials: C
authors.lastname: Wu
authors.forename: William W
authors.initials: WW
authors.lastname: Yu
authors.forename: Andrey L
authors.initials: AL
authors.lastname: Rogach