標題: CdSe/ZnS core-shell quantum dot assisted color conversion of violet laser diode for white lighting communication
作者: Wang, Wei-Chun
Wang, Huai-Yung
Chen, Tzu-Yu
Tsai, Cheng-Ting
Cheng, Chih-Hsien
Kuo, Hao-Chung
Lin, Gong-Ru
交大名義發表
National Chiao Tung University
關鍵字: visible light communication;white-lighting;CdSe/ZnS core-shell quantum dot
公開日期: 1-Dec-2019
摘要: By color-converting the violet laser diode (VLD) with a cadmium selenide and zinc sulfide (CdSe/ZnS) core-shell-quantum dot (QD) doped polydimethylsiloxane (PDMS) film, the VLD+CdSe/ZnS core-shell-QD transferred white-light with improved color rendering index (CRI) is demonstrated for high-speed indoor visible lighting communication. To facilitate hue saturation value (HSV) of the VLD +CdSe/ZnS core-shell-QD white-lighting module, dual-sized CdSe/ZnS core-shell-QDs with two luminescent wavelengths centered at 515 and 630 nm are doped into the PDMS. The CdSe/ZnS core-shell-QD doped PDMS phosphor with the optimized thickness of 2.5 mm serves as the beam divergent color-converter, which not only excites red (R) and green (G) fluorescence to detune the correlated color temperature (CCT) and CRI of the mixed red/green/violet (RGV) white-light, but also remains the residual VLD signal for data transmission. With a divergent angle of 127 degrees, such a VLD + CdSe/ZnS core-shell-QD can deliver cold white-light with a CCT of 6389 K and a CRI of 63.3 at Commission International de l'Eclairage coordinate of 0.3214, 0.2755. Most important, the residual VLD light component is relatively weak with its wavelength out of the peak optical sensitivity region of the human retina centered at 441 nm. The directly encoded VLD+CdSe/ZnS core-shell-QD white light successfully carries the 16-quadrature amplitude modulation (QAM) discrete multitone data, which supports the maximal transmission data rate of 9.6 Gbit/s with a bit error ratio (BER) of 3.59 x 10(-3).
URI: http://dx.doi.org/10.1515/nanoph-2019-0205
http://hdl.handle.net/11536/153450
ISSN: 2192-8606
DOI: 10.1515/nanoph-2019-0205
期刊: NANOPHOTONICS
Volume: 8
Issue: 12
起始頁: 2189
結束頁: 2201
Appears in Collections:Articles