Nanojunction Material Effect on the Photoelectric Response of Single-Wall Carbon Nanotube Rectennas

Lina Tizani; Yawar Abbas; Baker Mohammad; Moh’d Rezeq

doi:10.1021/acsomega.1c05605

Nanojunction Material Effect on the Photoelectric Response of Single-Wall Carbon Nanotube Rectennas

Lina Tizani, Yawar Abbas, Baker Mohammad, Moh’d Rezeq

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7 Scopus citations

Abstract

To optimize the performance of carbon nanotube (CNT)-based rectennas, we have studied the effect of metal work function on the photodetection characteristics. Two materials of conducting nanoprobes, namely, gold (Au) and platinum (Pt), have been used to form a rectifying diode at the interface with the CNT. The electrical and optical characteristics of single-wall carbon nanotubes (SWCNTs) dispersed on top of a SiO₂/Si substrate have been investigated using a conductive mode atomic force microscope (C-AFM). The I–V measurements performed for both diodes have exhibited an explicit rectification behavior with high sensitivity of a CNT-based rectenna to light. It has been observed that the lower work function metal (Au) leads to a higher on/off current ratio than the high work function metal (Pt). These experimental observations will be explained using the material characterization of the complete system along with representative energy-band diagrams.

Original language	British English
Pages (from-to)	35692-35698
Number of pages	7
Journal	ACS Omega
Volume	6
Issue number	51
DOIs	https://doi.org/10.1021/acsomega.1c05605
State	Published - 28 Dec 2021

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title = "Nanojunction Material Effect on the Photoelectric Response of Single-Wall Carbon Nanotube Rectennas",

abstract = "To optimize the performance of carbon nanotube (CNT)-based rectennas, we have studied the effect of metal work function on the photodetection characteristics. Two materials of conducting nanoprobes, namely, gold (Au) and platinum (Pt), have been used to form a rectifying diode at the interface with the CNT. The electrical and optical characteristics of single-wall carbon nanotubes (SWCNTs) dispersed on top of a SiO2/Si substrate have been investigated using a conductive mode atomic force microscope (C-AFM). The I–V measurements performed for both diodes have exhibited an explicit rectification behavior with high sensitivity of a CNT-based rectenna to light. It has been observed that the lower work function metal (Au) leads to a higher on/off current ratio than the high work function metal (Pt). These experimental observations will be explained using the material characterization of the complete system along with representative energy-band diagrams.",

author = "Lina Tizani and Yawar Abbas and Baker Mohammad and Moh{\textquoteright}d Rezeq",

note = "Funding Information: This publication is based upon work supported by the Khalifa University of Science and Technology under award No. 8474000134. Publisher Copyright: {\textcopyright} 2021 The Authors. Published by American Chemical Society.",

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T1 - Nanojunction Material Effect on the Photoelectric Response of Single-Wall Carbon Nanotube Rectennas

AU - Tizani, Lina

AU - Abbas, Yawar

AU - Mohammad, Baker

AU - Rezeq, Moh’d

N1 - Funding Information: This publication is based upon work supported by the Khalifa University of Science and Technology under award No. 8474000134. Publisher Copyright: © 2021 The Authors. Published by American Chemical Society.

PY - 2021/12/28

Y1 - 2021/12/28

N2 - To optimize the performance of carbon nanotube (CNT)-based rectennas, we have studied the effect of metal work function on the photodetection characteristics. Two materials of conducting nanoprobes, namely, gold (Au) and platinum (Pt), have been used to form a rectifying diode at the interface with the CNT. The electrical and optical characteristics of single-wall carbon nanotubes (SWCNTs) dispersed on top of a SiO2/Si substrate have been investigated using a conductive mode atomic force microscope (C-AFM). The I–V measurements performed for both diodes have exhibited an explicit rectification behavior with high sensitivity of a CNT-based rectenna to light. It has been observed that the lower work function metal (Au) leads to a higher on/off current ratio than the high work function metal (Pt). These experimental observations will be explained using the material characterization of the complete system along with representative energy-band diagrams.

AB - To optimize the performance of carbon nanotube (CNT)-based rectennas, we have studied the effect of metal work function on the photodetection characteristics. Two materials of conducting nanoprobes, namely, gold (Au) and platinum (Pt), have been used to form a rectifying diode at the interface with the CNT. The electrical and optical characteristics of single-wall carbon nanotubes (SWCNTs) dispersed on top of a SiO2/Si substrate have been investigated using a conductive mode atomic force microscope (C-AFM). The I–V measurements performed for both diodes have exhibited an explicit rectification behavior with high sensitivity of a CNT-based rectenna to light. It has been observed that the lower work function metal (Au) leads to a higher on/off current ratio than the high work function metal (Pt). These experimental observations will be explained using the material characterization of the complete system along with representative energy-band diagrams.

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JO - ACS Omega

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Nanojunction Material Effect on the Photoelectric Response of Single-Wall Carbon Nanotube Rectennas

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