Core Viewpoint - Researchers at the University of Rochester have developed a new solar thermoelectric generator (STEG) that boasts a 15-fold increase in conversion efficiency compared to earlier versions, making it suitable for powering IoT wireless sensors and wearable devices, as well as serving as an off-grid renewable energy system for rural areas [1]. Group 1 - The new STEG utilizes black metal technology to enhance energy conversion efficiency significantly [1]. - The research findings have been published in the latest issue of the journal "Light: Science & Applications" [1]. - The device has potential applications in various sectors, including IoT and renewable energy solutions for underserved regions [1].