## 1 Introduction  
Solid-state lighting devices are used massively in our day-to-day lives because of their low power consumption, high efficiency, long lifetime (>50,000 h), compactness, low cost, and being environmentally friendly, i.e., mercury-free light [1, 2, 3, 4, 5, 6]. In addition, solid-state lighting devices are also explored for indoor visible light communications (VLC) due to the advantages like high speed, high security, low cost, low energy consumption, no electromagnetic interference, health safety, and license-free bandwidth [7, 8, 9, 10, 11, 12]. A generic white light source is composed of a blue light-emitting diode (LED) chip exciting the Ce\({}^{3+}\) doped yellow phosphor, which absorbs a part of blue spectrum light and converts it into yellow light. The output light is a mixture of unabsorbed blue and broadband yellow light, which the human eye perceives as a nearly white light. A white light source for illumination should have a color-rendering index (CRI), correlated color temperature (CCT), and CIE 1931 chromaticity coordinates at \(>\)95, 4000-6500 K, and (0.33, 0.33), respectively. The CRI classifies the white color of light, and it can be increased by broadening the wavelength spectrum [13; 14; 15; 16; 17]. The quality of light defined by the properties above is the most comfortable for human vision, the work of ciliary muscles, and autonomic nervous functioning, eventually increasing human working efficiency [18]. Recent attempts to improve LED lamp optical qualities have used red, green, and yellow phosphors pumped by blue light. [PERSON] et al. demonstrated wavelength division multiplexing and VLC using multi-color LEDs up to 13 m [19]. However, multiple scattering and reabsorption cause thermal quenching of emitted light, resulting in poor illumination. Another method is mixing phosphors in glass, UV adhesive, or epoxy resin by spin blade, inkjet printing, and spray coating [20]. Still, in this case, the luminance efficacy of radiation and CCT is reduced significantly, and color parameters are still not up to the mark. [PERSON] et al. demonstrated how phosphor powders affected the rise and fall edges, i.e., pulse extension in the time domain. However, the petri-dish-sized phosphor layer consumes a lot of phosphor [21; 22]. [PERSON] et al. illustrated the effect of these phosphor layer thickness and concentration on CRI, CCT, and temporal response of pulse [23]. Furthermore, most LED light sources used daily have poor color characteristics. Duty cycle distortion affects chromaticity, affecting color stability for human vision during simultaneous communication. A communication channel noise, fading, path loss, pulse spreading, and time delay at the receiver result in signal distortion. Consequently, inter-symbol interference (ISI) can occur, causing the perception of binary one as zero and vice versa [24]. The ISI restricts the number of users who may access the Wi-Fi network due to limited bandwidth. [PERSON] et al. [25] presented Na\({}_{2}\)YMg\({}_{2}\)V\({}_{3}\)O\({}_{12}\):Sm\({}^{3+}\) phosphor as a versatile element for solid-state illumination, demonstrating a CRI of 84.9, a CCT of 6637 K, and a CIE (0.314, 0.373). The study conducted by [PERSON] et al. [26] demonstrates that multi-carbon dots can be used for illumination, with CRI, CCT, and CIE as 86.9, 5388 K, and (0.3341, 0.3075), respectively. [PERSON] et al. [27] demonstrated the characteristics of two phosphors, namely, YAG and nitride phosphors, with CRI, CCT, and CIE as 85, 2500 K, and (0.4, 0.4), respectively. Most of those mentioned above reported multi-color phosphor lamps still could not achieve the required parameters, i.e., CRI, CCT, CIE to be \(>\)95, 4000-6500 K, and (0.33, 0.33), respectively. This paper presents a hybrid luminaire that combines lighting and communication capabilities. It achieves this by utilizing multi-color phosphors stimulated by a blue LED to meet the requirements of CRI, CCT, and CIE parameters.