title: Color temperature tunable white-light LED cluster with extrahigh color rendering index.
abstract: The correlated color temperature (CCT) tunable white-light LED cluster with extrahigh color rendering property has been found by simulation and fabricated, which consists of three WW LEDs (CCT = 3183 K), one red LED (634.1 nm), one green LED (513.9 nm), and one blue LED (456.2 nm). The experimental results show that this cluster can realize the CCT tunable white-lights with a color rendering index (CRI) above 93, special CRI R9 for strong red above 90, average value of the special CRIs of R9 to R12 for the four saturated colors (red, yellow, green, and blue) above 83, and luminous efficacies above 70 lm/W at CCTs of 2719 K to 6497 K.
authors.affiliation: Department of Applied Physics, Dong Hua University, 1882 Yan'an Road (W), Shanghai 200051, China.
authors.forename: Minhao
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Shanghai Yaming Lighting Co., Ltd., 1001 Jiaxin Road, Jiading District, Shanghai 201801, China.
authors.forename: Yu
authors.identifier: 0000-0001-6736-3680
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Applied Physics, Dong Hua University, 1882 Yan'an Road (W), Shanghai 200051, China.
authors.forename: Guoxing
authors.initials: G
authors.lastname: He
mesh_terms: D003116:Color; D008027:Light; D055096:Optical Devices / Q000592:standards*