U.S. scientists claim 15-fold performance increase for solar thermoelectric generator

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Researchers at the University of Rochester have developed a solar thermoelectric generator (STEG) that boasts a remarkable 15-fold increase in efficiency compared to existing models. This advancement is attributed to innovative thermal management techniques rather than improvements in semiconductor materials. Traditional solar thermoelectric generators convert less than 1% of sunlight into electricity, while this new design aims to enhance performance significantly by optimizing both the hot and cold sides of the device.

The STEG utilizes a unique black metal technology that enhances light absorption and minimizes heat loss, alongside a specially designed heat sink to improve heat dissipation. By effectively managing thermal conditions, the device can achieve a greater temperature difference, leading to a substantial increase in power output. The findings, detailed in the study published in Light: Science and Applications, suggest that STEGs could be utilized in various applications, including powering avionic devices, wireless sensor networks, and wearable electronics.