A step closer to high -performance organic thermoelectrics

Converting body temperature to electricity: A step closer to high -performance organic thermoelectrics

Illustration of the doping modulation process and the formation of heat radiation. Yes: Shu-Jen Wang

Can you imagine charging your cell phone using only your body heat? It may sound futuristic, but thermoelectrics can do it. Thermoelectrics is about converting heat into efficient energy, using inorganic materials.

Due to their mechanical simplicity, light-weight and low thermal conductivity, organic semiconductors have emerged as a promising value-added system for simple thermoelectric applications. Proper doping for the formation of the carrier is key to thermoelectric performance. Normal pulse doping usually introduces the patient to a high doping movement that limits the electrical conductivity.

“In our research, we used a modulation-doping method on ordered organic thin films, in which the dopant contaminant was separated from the conduction stream. “said the original author, Dr. Shu-Jen Wang is from the Institute of Applied Physics at TU Dresden.

The group around Prof. Karl Leo investigated the conductivity and thermoelectric properties in modulation-doped large-area rubrene thin films with different glass types. They have been able to demonstrate doping modulation that is capable of achieving high doping requirements up to high doping levels, while conventional high doping runs in the conservation state. Modulation-doped orthorhombic rubrene has better thermoelectric power sources.

“Our results show that doping modulation with high -quality crystalline organic semiconductor films is a new technique for the implementation of high -quality organic thermoelectric… Semiconductors that allow the independent increase of carrier and movement. , ”said Shu-Jen Wang.

Prof. Karl Leo adds that they “create new ways to implement simple thermoelectric devices that can directly extract electrical power from heat in a beautiful and efficient manner. With high -quality organic semiconductors.”

The research is published in Scientific advances.


A design to remotely change the doping of 2D transistors


More information:
Shu-Jen Wang et al, Optimal doping modulation: A pathway to optimal organic thermoelectric materials, Scientific advances (2022). DOI: 10.1126 / sciadv.abl9264

Presented by Dresden University of Technology

Directions: Converting body temperature to electricity: A step closer to high performance organic thermoelectrics (2022, April 4) Retrieved 4 April 2022 from https://phys.org/news/2022-04 -body-electricity-closer-high-performance -thermoelectrics.html

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