Air‐tolerant Fabrication and Enhanced Thermoelectric Performance of n‐Type Single‐walled Carbon Nanotubes Encapsulating 1,1′‐Bis(diphenylphosphino)ferrocene |
| |
| Authors: | Prof Yoshiyuki Nonoguchi Yu Iihara Kenji Ohashi Tomoko Murayama Prof Tsuyoshi Kawai |
| |
| Affiliation: | Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Japan |
| |
| Abstract: | The thermally‐triggered n‐type doping of single‐walled carbon nanotubes is demonstrated using 1,1′‐bis(diphenylphosphino)ferrocene, a novel n‐type dopant. Through a simple thermal vacuum process, the phosphine compounds are moderately encapsulated inside single‐walled carbon nanotubes. The encapsulation into SWNTs is carefully characterized using Raman/X‐ray spectroscopy and transmission electron microscopy. This easy‐to‐handle doping with air‐stable precursors for n‐type SWNTs enables the large‐scale fabrication of thermoelectric materials showing an excellent power factor exceeding approximately 240 μW mK?2. |
| |
| Keywords: | charge carrier injection doping energy conversion nanotubes thermoelectric materials |
|
