Core Viewpoint - NHK Science and Technology Research Institute, in collaboration with Chiba University and Kyoto University, has developed the world's first OLED display device capable of both emitting light and generating solar power, successfully achieving blue light emission [1]. Group 1: Technology Development - The new technology aims to be utilized in disaster scenarios, allowing displays to emit light without an external power source [1]. - The research team utilized "MR-TADF materials," which possess high luminous efficiency and strong light absorption characteristics, enabling the device to switch between light emission and solar power generation modes [1]. - MR-TADF materials represent the third generation of OLED technology, characterized by narrow spectral light emission (full width at half maximum less than 40nm), providing high color purity and efficiency [1]. Group 2: Performance Metrics - The research team successfully achieved red, green, and blue light emission, with external quantum efficiency for green and red light emission devices exceeding 8.5%, marking the highest performance levels globally for both light emission and power generation efficiency [1]. Group 3: Future Applications - NHK Tech plans to focus on enhancing the efficiency and durability of light emission and power generation, aiming for practical low-power display devices [4]. - The technology may also find applications in augmented reality (AR) and virtual reality (VR) fields, which require precise color representation [4].