Abstract
Perovskite emitters have attracted great attention in recent years owing to their excellent photoelectric performance with low-cost potential. Some very recent studies have revealed that perovskites not only have narrow emitting peak with high purity but also have multi-color or broad spectrum in entire visible light, even some single emissive layer-based white perovskite light-emitting diodes (SEL-WPeLEDs) have been confirmed, showing promise in lighting and display. In this Perspective, we summarized the issues and challenges faced by these perovskite-based SEL-WLEDs and proposed some feasible suggestions in improving their light-emitting performance, hoping to promote their applications in lighting and other optoelectronic devices.
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