A light-emitting device, an electronic device, or a lighting device with low power consumption and high reliability is provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element. The first to fourth light-emitting elements include the same EL layer between an anode and a cathode. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer contains a fluorescent substance. The peak wavelength of an emission spectrum of the fluorescent substance in a toluene solution of the fluorescent substance is 440 nm to 460 nm, preferably 440 nm to 455 nm. The second light-emitting layer contains a phosphorescent substance. The first light-emitting element exhibits blue emission. The second light-emitting element exhibits green emission. The third light-emitting element exhibits red emission. The fourth light-emitting element exhibits yellow emission.
提供了一种低功耗、高可靠性的发光器件、电子设备或照明设备。该发光器件包括第一发光元件、第二发光元件、第三发光元件和第四发光元件。第一至第四发光元件包括阳极和阴极之间的相同 EL 层。EL 层包括第一发光层和第二发光层。第一发光层包含荧光物质。在荧光物质的
甲苯溶液中,荧光物质发射光谱的峰值波长为 440 纳米至 460 纳米,最好为 440 纳米至 455 纳米。第二发光层含有
磷光物质。第一发光元件发出蓝色光。第二发光元件发出绿色光。第三个发光元件发出红色光。第四个发光元件发出黄色光。