Synthesis, characterization and evaluation of tunable thermal diffusivity of phosphorus-doped carbon nanodot

• Published in: Applied physics. A, Materials science & processing Materials science & processing, 2020-11, Vol.126 (11), Article 828
• Main Authors: Mathew, Raji Mary, Zachariah, Elsa Susan, Jose, Jasmine, Thomas, Titu, John, Jancy, Titus, Timi, Unni, Nisha G., Mathew, S., Mujeeb, A., Thomas, Vinoy
• Format: Article
• Language: English
• Subjects: Applied physics; Carbon; Carbon dots; Characterization and Evaluation of Materials; Condensed Matter Physics; Diffusivity; Heat conductivity; Heat transfer; Machines; Manufacturing; Materials science; Morphology; Nanotechnology; Optical and Electronic Materials; Optical properties; Phosphorus; Photoelectrons; Photoluminescence; Physics; Physics and Astronomy; Processes; Structural analysis; Surfaces and Interfaces; Thermal conductivity; Thermal diffusivity; Thermal insulation; Thermal lensing; Thermodynamic properties; Thin Films; X ray photoelectron spectroscopy
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-020-04014-2

Present study focusses to report the tunable thermal properties of phosphorus-doped carbon nanodot (PCND) using dual-beam mode matched thermal lens spectroscopic technique. The morphological, structural, and optical characterization of prepared carbon nanodot was probed by transmission electron microscopic technique (TEM), X-ray photoelectron spectroscopic technique (XPS), UV–visible absorption spectroscopic technique and photoluminescence spectroscopic technique. The average size of PCND was found to be 4.02 ± 0.13 nm. To date, there have been a few reports the thermal diffusivity and thermal conductivity of carbon dot by Dual-beam mode matched thermal lens spectroscopic technique. Among them, the present system has high value of thermal diffusivity (9.1139 ± 1.8644)*10 −8  m 2 /s) and thermal conductivity (0.3807 ± 0.0778 W/mK). The variation in thermal diffusivity and thermal conductivity of sample with different concentration was also recorded.The variation in thermal diffusivity values ranging from (9.1139 ± 1.8644)*10 −8  m 2 /s to (2.9532 ± 0.8547)*10 −8  m 2 /s indicates the tuning in heat transfer property of the present system by altering their concentration.These extend their application potential in microelectronic cooling as well as thermal insulation.