Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 10, Issue 15, Pages 5783-5786Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2tc00179a
Keywords
-
Funding
- U.S. Department of Energy (DOE) [DE-AC36-08GO28308]
- University of Trieste
- INSTM
- European Commission [862030]
- Italian Ministry of Education MIUR [2017PBXPN4]
- Spanish State Research Agency [MDM-2017-0720]
- Deutsche Forschungsgemeinschaft DFG [182849149]
Ask authors/readers for more resources
Single-walled carbon nanohorns are a carbon allotrope with promising applications, and through thermopower measurements, it has been determined that SWCNH behaves as a p-type semiconductor.
Single-walled carbon nanohorns are an allotrope of carbon with promising properties for a variety of applications. Despite their promise, the majority carrier type (i.e. electrons or holes) that defines the electronic properties of this novel semiconductor is poorly understood and so far only indirect measurements have been employed to arrive at contradictory results. Here, we directly determine the majority carrier type in single-wall carbon nanohorns for the first time by means of thermopower measurements. Using this direct method, we show that SWCNH films exhibit a positive Seebeck coefficient indicating that SWCNHs behave as p-type semiconductors. This result is further corroborated by intentionally tuning the hole or electron concentrations of SWCNH layers via redox doping with molecular electron acceptors and donors, respectively. These results provide a framework for both measuring and chemically tuning the majority carrier type in this emerging nanocarbon semiconductor.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available