Measurements of work function of pristine and CuI doped carbon nanotubes

Жуков, А. А.; Gartman, V.K.; Borisenko, D. N.; Chernysheva, M. V.; Eliseev, A. A.

doi:10.1134/s1063776109080172

Cited by 8 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optical and transport properties of carbon nanotubes were affected by doping. − In this work, the doping approach is based on a difference between the WF values of carbon nanotubes (∼4.95–5.05 eV , ) and acceptor material like iodine (∼5.5 eV) and copper chloride (∼6.8–7.0 eV), or donor material such as CoCp 2 (ionization energy ∼4.0 eV − ). The electron transfer between the CNT states and the dopant material states depends on their relative energy.…”

Section: Methodsmentioning

confidence: 99%

Tunable Doping and Characterization of Single-Wall Carbon Nanotube Macrosystems for Electrode Material Applications

Tonkikh

Eremina

Obraztsova

et al. 2021

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

We present an efficient method for easy tuning of optical and electrophysical parameters of macroscopic objects formed from single-wall carbon nanotubes (SWCNTs). We have developed a unique step-by-step doping procedure by filling the SWCNT inner channels with acceptors and donors in gaseous conditions. The main parameter that tailors the film properties is the dopant concentration in the SWCNT channels varied through the gaseous filling time. The ambient oxygen impact on the doping level has been measured and analyzed for all considered SWCNT objects. Our approach provides a predictable shift of Fermi level position in the range of 0.1−0.9 eV and the optical band gap edge value between 0.4 and 1.1 eV. The tuning method was applied to optimize the thermopower performance of SWCNT films. We have measured the maximum possible values of the power factor and thermoelectric coefficient and studied the stability of these parameters in the air for studied samples. On the basis of the revealed relation between thermopower and sheet resistance, we propose a general approach for characterization of conducting CNT macro-objects, which we call the "doping map" plotting. This empirical method allows to predict stable, maximum, or optimal values for the transport, thermopower, and optical characteristics of materials in the air. Our findings are prospective for prediction and tailoring of SWNT-containing materials properties used in such technological applications, as electrochemical, sensor, solar cell, or thermoelectric electrode materials.

show abstract

Section: Methodsmentioning

confidence: 99%

Tunable Doping and Characterization of Single-Wall Carbon Nanotube Macrosystems for Electrode Material Applications

Tonkikh

Eremina

Obraztsova

et al. 2021

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…[430] demonstrated that the SWCNTs filled with copper iodide have a small work function, and it paves the way to use such nanostructures for the creation of field emitters of electroluminescence and X-ray tubes [54].…”

Section: Other Applicationsmentioning

confidence: 99%