期刊
APPLIED PHYSICS LETTERS
卷 106, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4919526
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资金
- National Basic Research Program of China (973 Program) [2013CB934400, 2012CB932400]
- National Natural Science Foundation of China [61361160412, 31400860]
- Natural Science Foundation of Jiangsu Province of China [BK20130052, BK20130298]
- Six Talent Peaks Project of Jiangsu Province [2013-XCL-036]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Jiangsu Key Laboratory for Carbon-Based Functional Materials Devices
In this study, by employing fluorescent silicon nanoparticles (SiNPs) as a class of color converters, we introduce a type of small-sized (similar to 3.7 nm) SiNPs-based color converters for white light-emitting diodes (LEDs). The SiNPs with tunable fluorescent color ranging from blue to yellow-green could be achieved through an optimized microwave synthetic method. Of particular significance, the SiNPs exhibiting broadband yellow-green emission prepared at pH value of 4 are demonstrated to be suitable for forming the basis of a white spectrum, which are thus further employed as color converter for the construction of white LED. The resultant LED devices exhibit a luminous efficiency of 13 lmW(-1), Commission Internationale de l'Eclairage chromaticity coordinates of (0.3041, 0.3129), color rendering index of 82, and correlated color temperature of 7982K. (C) 2015 AIP Publishing LLC.
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