ArticleScientific reports2025
Self-generated temperature gradient under uniform heating in p-i-n junction carbon nanotube thermoelectric generators.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Substrate Engineering of SWCNT p-n Junctions for Dual-Mode Power Generation and Heat-Flux Sensing.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Recent Advances in Air-StableMaterials (Basel, Switzerland) · 2026Review
- Flexible Mesh-Structured Single-Walled Carbon Nanotube Thermoelectric Generators with Enhanced Heat Dissipation for Wearable Applications.Micromachines · 2026Article
- Impact of Air Temperature and Humidity on Performance of Heat-Source-Free Water-Floating Single-Walled Carbon Nanotube Thermoelectric Generators for IoT Sensors.Sensors (Basel, Switzerland) · 2025Article
- SWCNT-Based Composite Films with High Mechanical Strength and Stretchability by Combining Inorganic-Blended Acrylic Emulsion for Various Thermoelectric Generators.Nanomaterials (Basel, Switzerland) · 2025Article
- SWCNT/PEDOT:PSS/SA Composite Yarns with High Mechanical Strength and Flexibility via Wet Spinning for Thermoelectric Applications.Sensors (Basel, Switzerland) · 2025Article
- Optimization of Ultrasonic Dispersion of Single-Walled SWCNT Inks for Improvement of Thermoelectric Performance in SWCNT Films Using Heat Source-Free Water-Floating SWCNT Thermoelectric Generators.Materials (Basel, Switzerland) · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Single-walled carbon nanotubes (SWCNTs) have attracted attention for use in thermoelectric generators (TEGs) that convert thermal energy into electricity. SWCNTs, which are lightweight, flexible, and nontoxic materials, are perfectly suited for TEGs as self-contained power sources for Internet of Things (IoT) sensors. However, the generation of electricity by TEGs requires not only a heat source to create a temperature gradient within the TEGs but also a cold source. In this study, we prepared SWCNT-TEGs consisting of p-i-n junction SWCNT films on a polyimide sheet that automatically generated a temperature gradient within the SWCNT-TEGs by uniform heating without a cold source. The output voltage and current of the SWCNT-TEG increased with increasing temperature. At a heating temperature of 370 K, the SWCNT-TEG exhibited an output voltage of 2.3 mV, a short-circuit current of 13.7 µA, and a maximum output power of 7.7 nW. The self-generated temperature gradient under uniform heating was attributed to the higher optical absorption of the SWCNT film than that of the polyimide sheet, which increased the temperature of the SWCNT film. The results of this study indicate that a simple attachment of SWCNT-TEGs to a heat source can sustainably power an IoT sensor as self-contained power sources.
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