title: Improved color rendering and luminous efficacy in phosphor-converted white light-emitting diodes by use of dual-blue emitting active regions.
abstract: Conventional white-light sources suffer from a fundamental trade-off between color rendering index and the luminous efficacy; increasing one generally comes at the expense of the other. We demonstrate through simulation that dual-wavelength blue-emitting active regions in phosphor-converted white light sources maximize the output luminous flux while significantly increasing the color rendering ability. Our results indicate that such improvements can be achieved over a broad range of correlated color temperatures.
authors: Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
authors: Roya
authors: R
authors: Mirhosseini
authors: Martin F
authors: MF
authors: Schubert
authors: Sameer
authors: S
authors: Chhajed
authors: Jaehee
authors: J
authors: Cho
authors: Jong Kyu
authors: JK
authors: Kim
authors: E Fred
authors: EF
authors: Schubert
mesh_terms: D003116:Color; D003198:Computer Simulation; D004867:Equipment Design; D008027:Light; D008029:Lighting / Q000379:methods; D015233:Models, Statistical; D055095:Optics and Photonics; D010758:Phosphorus / Q000737:chemistry; D013696:Temperature
chemical_list: D010758:Phosphorus