Utilizing Electrical Characteristics of Individual Nanotube Devices to Study the Charge Transfer between CdSe Quantum Dots and Double-Walled Nanotubes
Abstract
To study the charge transfer between cadmium selenide (CdSe) quantum dots (QDs) and double-walled nanotubes (DWNTs), various sizes of CdSe-ligand-DWNT structures are synthesized, and field-effect transistors (FETs) from individual functionalized DWNTs rather than networks of the same are fabricated. From the electrical measurements, two distinct electron transfer mechanisms from the QD system to the nanotube are identified. By the formation of the CdSe-ligand-DWNT heterostructure, an effectively n-doped nanotube is created due to the smaller work function of CdSe as compared with the nanotube. In addition, once the QD-DWNT system is exposed to laser light, further electron transfer from the QD through the ligand, i.e. 4-mercaptophenol (MTH), to the nanotube occurs and a clear QD size-dependent tunneling process is observed. Lastly, the detailed analysis of a large set of devices and the particular methodology employed here for the first time allowed for extracting a wavelength and quantum dot size dependent charge transfer efficiency – a quantity that is evaluated for the first time through electrical measurement.
- Publication Date:
- Research Org.:
- Purdue Univ., West Lafayette, IN (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1345476
- Alternate Identifier(s):
- OSTI ID: 1348295
- Report Number(s):
- BNL-113682-2017-JA
Journal ID: ISSN 2380-8195
- Grant/Contract Number:
- AC02-98CH10886; SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Energy Letters
- Additional Journal Information:
- Journal Volume: 2; Journal Issue: 3; Journal ID: ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; individual nanotube device; charge transfer; size dependent
Citation Formats
Zhu, Yuqi, Zhou, Ruiping, Wang, Lei, Wong, Stanislaus S., and Appenzeller, Joerg. Utilizing Electrical Characteristics of Individual Nanotube Devices to Study the Charge Transfer between CdSe Quantum Dots and Double-Walled Nanotubes. United States: N. p., 2017.
Web. doi:10.1021/acsenergylett.7b00023.
Zhu, Yuqi, Zhou, Ruiping, Wang, Lei, Wong, Stanislaus S., & Appenzeller, Joerg. Utilizing Electrical Characteristics of Individual Nanotube Devices to Study the Charge Transfer between CdSe Quantum Dots and Double-Walled Nanotubes. United States. https://doi.org/10.1021/acsenergylett.7b00023
Zhu, Yuqi, Zhou, Ruiping, Wang, Lei, Wong, Stanislaus S., and Appenzeller, Joerg. Thu .
"Utilizing Electrical Characteristics of Individual Nanotube Devices to Study the Charge Transfer between CdSe Quantum Dots and Double-Walled Nanotubes". United States. https://doi.org/10.1021/acsenergylett.7b00023. https://www.osti.gov/servlets/purl/1345476.
@article{osti_1345476,
title = {Utilizing Electrical Characteristics of Individual Nanotube Devices to Study the Charge Transfer between CdSe Quantum Dots and Double-Walled Nanotubes},
author = {Zhu, Yuqi and Zhou, Ruiping and Wang, Lei and Wong, Stanislaus S. and Appenzeller, Joerg},
abstractNote = {To study the charge transfer between cadmium selenide (CdSe) quantum dots (QDs) and double-walled nanotubes (DWNTs), various sizes of CdSe-ligand-DWNT structures are synthesized, and field-effect transistors (FETs) from individual functionalized DWNTs rather than networks of the same are fabricated. From the electrical measurements, two distinct electron transfer mechanisms from the QD system to the nanotube are identified. By the formation of the CdSe-ligand-DWNT heterostructure, an effectively n-doped nanotube is created due to the smaller work function of CdSe as compared with the nanotube. In addition, once the QD-DWNT system is exposed to laser light, further electron transfer from the QD through the ligand, i.e. 4-mercaptophenol (MTH), to the nanotube occurs and a clear QD size-dependent tunneling process is observed. Lastly, the detailed analysis of a large set of devices and the particular methodology employed here for the first time allowed for extracting a wavelength and quantum dot size dependent charge transfer efficiency – a quantity that is evaluated for the first time through electrical measurement.},
doi = {10.1021/acsenergylett.7b00023},
journal = {ACS Energy Letters},
number = 3,
volume = 2,
place = {United States},
year = {Thu Mar 02 00:00:00 EST 2017},
month = {Thu Mar 02 00:00:00 EST 2017}
}
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Works referencing / citing this record:
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