A light-emitting device, comprising: a substrate having a surface; a plurality of light sources (302a-j, 304a-k, 306a-m, 308a-n) disposed on the surface of the substrate, each of the light sources (302a-j, 304a-k, 306a-m, 308a-n) configured to emit a primary radiation; and a light-emitting unit covering the light sources (302a-j, 304a-k, 306a-m, 308a-n) and at least a portion of the surface of the substrate, the light-emitting unit comprising a plurality of wavelength conversion components (132, 134, 136, 138), wherein: each of the wavelength conversion components (132, 134, 136, 138) is adjacent to, and at least partially in contact with, at least another one of the wavelength conversion components (132, 134, 136, 138), without being segregated by one or more divider, the wavelength conversion components (132, 134, 136, 138) are arranged in a multi-loop configuration with a central wavelength conversion component encircled by at least two odd-numbered-loop wavelength conversion components (134, 138) and at least one even-numbered-loop wavelength conversion component, each of the wavelength conversion components (132, 134, 136 138) emits a respective converted radiation, upon absorbing a portion of the primary radiation from one or more of the light sources (302a-j, 304a-k, 306a-m 308a-n), and mixes the respective converted radiation with a portion of the primary radiation from the one or more of the light sources (302a-j, 304a-k, 306a-m, 308a-n) that is not absorbed to form a respective mixed radiation, and at least the color temperature of the mixed radiation of the central wavelength conversion component and the at least one even-numbered-loop wavelength conversion component is different from the color temperature of the mixed radiation of the at least two odd-numbered-loop wavelength conversion components (134, 138). a substrate having a surface; a plurality of light sources (302a-j, 304a-k, 306a-m, 308a-n) disposed on the surface of the substrate, each of the light sources (302a-j, 304a-k, 306a-m, 308a-n) configured to emit a primary radiation; and a light-emitting unit covering the light sources (302a-j, 304a-k, 306a-m, 308a-n) and at least a portion of the surface of the substrate, the light-emitting unit comprising a plurality of wavelength conversion components (132, 134, 136, 138), wherein: each of the wavelength conversion components (132, 134, 136, 138) is adjacent to, and at least partially in contact with, at least another one of the wavelength conversion components (132, 134, 136, 138), without being segregated by one or more divider, the wavelength conversion components (132, 134, 136, 138) are arranged in a multi-loop configuration with a central wavelength conversion component encircled by at least two odd-numbered-loop wavelength conversion components (134, 138) and at least one even-numbered-loop wavelength conversion component, each of the wavelength conversion components (132, 134, 136 138) emits a respective converted radiation, upon absorbing a portion of the primary radiation from one or more of the light sources (302a-j, 304a-k, 306a-m 308a-n), and mixes the respective converted radiation with a portion of the primary radiation from the one or more of the light sources (302a-j, 304a-k, 306a-m, 308a-n) that is not absorbed to form a respective mixed radiation, and at least the color temperature of the mixed radiation of the central wavelength conversion component and the at least one even-numbered-loop wavelength conversion component is different from the color temperature of the mixed radiation of the at least two odd-numbered-loop wavelength conversion components (134, 138). each of the wavelength conversion components (132, 134, 136, 138) is adjacent to, and at least partially in contact with, at least another one of the wavelength conversion components (132, 134, 136, 138), without being segregated by one or more divider, the wavelength conversion components (132, 134, 136, 138) are arranged in a multi-loop configuration with a central wavelength conversion component encircled by at least two odd-numbered-loop wavelength conversion components (134, 138) and at least one even-numbered-loop wavelength conversion component, each of the wavelength conversion components (132, 134, 136 138) emits a respective converted radiation, upon absorbing a portion of the primary radiation from one or more of the light sources (302a-j, 304a-k, 306a-m 308a-n), and mixes the respective converted radiation with a portion of the primary radiation from the one or more of the light sources (302a-j, 304a-k, 306a-m, 308a-n) that is not absorbed to form a respective mixed radiation, and at least the color temperature of the mixed radiation of the central wavelength conversion component and the at least one even-numbered-loop wavelength conversion component is different from the color temperature of the mixed radiation of the at least two odd-numbered-loop wavelength conversion components (134, 138).