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Realization of solid-state red fluorescence and concentration-induced multicolor emission from n,b co-doped carbon dots

引用

Frontiers of Materials Science 2023年第2期17卷 121-132页

作者： Junli Wang Jingxia Zheng Pinyi He Qiang Li Yongzhen Yang Xuguang Liu Juanzhi Yan Yi Zhang Department of Materials and Chemical Engineering Taiyuan UniversityTaiyuan 030032China Key Laboratory of Interface Science and Engineering in Advanced Materials(Ministry of Education) Taiyuan University of TechnologyTaiyuan 030024China School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China college of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Department of Chemistry and Chemical Engineering Lyuliang UniversityLyuliang 033001China

As a new type of luminescent material,carbon dots(CDs)have attracted increased attention for their superior optical properties in recent ***,solidstate fluorescent CDs,especially with red emission,are still a major ***,CDs with solid-state red emission were synthesized by co-doping of n and b using the one-step microwave *** CD powder exhibits excitation-independent solid-state red fluorescence without any dispersion matrices,with optimum solid-state fluorescence wavelength of 623 *** hydrogen bonding interaction in CDs is helpful for solid-state fluorescence of *** IG/ID value of CDs reaches up to 3.49,suggesting their very high graphitization degree,which is responsible for their red *** addition,CDs show the concentration-induced multicolor emission,which is attributed to the decreased energy gap in the high concentrated CD *** exploit their concentration-dependent emission,CDs with changing ratio in matrices are applied as a color-converting layer on ultraviolet chip to fabricate multicolor light-emitting diodes with light coordinates of(0.33,0.38),(0.41,0.48),(0.49,0.44),and(0.67,0.33),which belong to green,yellow,orange,and red light,respectively.

关键词： carbon dot solid-state red fluorescence concentration-induced multicolor emission n,b co-doping

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