Light-emitting diodes (LEDs) based on perovskite semiconductor materials with tunable emission wavelength in visible light range as well as narrow linewidth are potential competitors among current light-emitting display technologies, but still suffer from severe instability driven by electric field. Here, we develop a stable, efficient and high-color purity hybrid LED with a tandem structure by combining the perovskite LED and the commercial organic LED technologies to accelerate the practical application of perovskites. Perovskite LED and organic LED with close photoluminescence peak are selected to maximize photon emission without photon reabsorption and to achieve the narrowed emission spectra. By designing an efficient interconnecting layer with p-type interface doping that provides good opto-electric coupling and reduces Joule heating, the resulting green emitting hybrid LED shows a narrow linewidth of around 30 nm, a peak luminance of over 176,000 cd m⁻², a maximum external quantum efficiency of over 40%, and an operational half-lifetime of over 42,000 h.

基于钙钛矿半导体材料的发光二极管（LED）具有在可见光范围内可调的发射波长以及窄线宽，是当前发光显示技术的潜在竞争对手，但仍然受到电场驱动的严重不稳定的影响。在此，我们将钙钛矿LED与商用有机LED技术相结合，开发出一种稳定、高效、高色纯度的串联结构混合LED，以加速钙钛矿的实际应用。选择具有接近光致发光峰的钙钛矿LED和有机LED，以最大化光子发射而不吸收光子并实现窄发射光谱。通过设计具有 p 型界面掺杂的高效互连层，提供良好的光电耦合并减少焦耳热，所得绿光发光混合 LED 显示出约 30 nm 的窄线宽，峰值亮度超过 176,000 cd m ^-2 ，最大外量子效率超过40%，工作半衰期超过42,000小时。