Atomic Layer Deposition of Zinc Oxide on Multiwalled Carbon Nanotubes for UV Photodetector Applications

2011 ◽  
Vol 158 (2) ◽  
pp. K24 ◽  
Author(s):  
Yu-Hung Lin ◽  
Po-Sheng Lee ◽  
Yang-Chih Hsueh ◽  
Ko-Ying Pan ◽  
Chi-Chung Kei ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Zinc Oxide ◽  
Atomic Layer Deposition ◽  
Multiwalled Carbon Nanotubes ◽  
Atomic Layer ◽  
Multiwalled Carbon ◽  
Uv Photodetector ◽  
Layer Deposition

Understanding and Controlling Nucleation and Growth of TiO2Deposited on Multiwalled Carbon Nanotubes by Atomic Layer Deposition

2015 ◽  
Vol 119 (6) ◽  
pp. 3379-3387 ◽  
Author(s):  
Yucheng Zhang ◽  
Carlos Guerra-Nuñez ◽  
Ivo Utke ◽  
Johann Michler ◽  
Marta D. Rossell ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Layer Deposition ◽  
Multiwalled Carbon Nanotubes ◽  
Atomic Layer ◽  
Nucleation And Growth ◽  
Multiwalled Carbon ◽  
Layer Deposition

Atomic Layer Deposition on Quantities of Multiwalled Carbon Nanotubes

2007 ◽  
Vol 1054 ◽  
Author(s):  
Andrew S. Cavanagh ◽  
Christopher A. Wilson ◽  
Alan W. Weimer ◽  
Steven M. George
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Layer Deposition ◽  
Multiwalled Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
High Surface ◽  
High Surface Area ◽  
Atomic Layer ◽  
Multiwalled Carbon ◽  
Transmission Electron ◽  
Layer Deposition

ABSTRACTAtomic layer deposition (ALD) was performed on quantities of multiwalled carbon nanotubes (MWCNTs) in a rotary reactor. Because of nucleation difficulties, Al2O3 ALD grew as nanospheres on the MWCNTs. After a NO2 nucleation treatment, Al2O3 ALD films grew conformally and noncovalently functionalized the surface of the MWCNT. This Al2O3 ALD film served as a platform for the growth of W ALD metal. The uncoated and ALD-coated MWCNTs were characterized with transmission electron microscopy and x-ray photoelectron spectroscopy. This study demonstrates that ALD can be performed on quantities of very high surface area MWCNT substrates.

scholarly journals Photocatalytic and Gas Sensitive Multiwalled Carbon Nanotube/TiO2-ZnO and ZnO-TiO2 Composites Prepared by Atomic Layer Deposition

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 252 ◽  
Author(s):  
László Péter Bakos ◽  
Nóra Justh ◽  
Ulisses Carlo Moura da Silva Bezerra da Costa ◽  
Krisztina László ◽  
János László Lábár ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Layer Deposition ◽  
Oxide Layer ◽  
Gas Sensing ◽  
Nitrogen Adsorption ◽  
Atomic Layer ◽  
Lower Surface ◽  
Multiwalled Carbon ◽  
Double Oxide ◽  
Layer Deposition

TiO2 and ZnO single and multilayers were deposited on hydroxyl functionalized multi-walled carbon nanotubes using atomic layer deposition. The bare carbon nanotubes and the resulting heterostructures were characterized by TG/DTA, Raman, XRD, SEM-EDX, XPS, TEM-EELS-SAED and low temperature nitrogen adsorption techniques, and their photocatalytic and gas sensing activities were also studied. The carbon nanotubes (CNTs) were uniformly covered with anatase TiO2 and wurtzite ZnO layers and with their combinations. In the photocatalytic degradation of methyl orange, the most beneficial structures are those where ZnO is the external layer, both in the case of single and double oxide layer covered CNTs (CNT-ZnO and CNT-TiO2-ZnO). The samples with multilayer oxides (CNT-ZnO-TiO2 and CNT-TiO2-ZnO) have lower catalytic activity due to their larger average densities, and consequently lower surface areas, compared to single oxide layer coated CNTs (CNT-ZnO and CNT-TiO2). In contrast, in gas sensing it is advantageous to have TiO2 as the outer layer. Since ZnO has higher conductivity, its gas sensing signals are lower when reacting with NH3 gas. The double oxide layer samples have higher resistivity, and hence a larger gas sensing response than their single oxide layer counterparts.

Improving the photodetection and stability of a visible-light QDs/ZnO phototransistor via an Al2O3 additional layer

2021 ◽  
Author(s):  
Sungho Park ◽  
Byung Jun Kim ◽  
Tae Yeon Kim ◽  
Eui Young Jung ◽  
Kyu-Myung Lee ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Atomic Layer Deposition ◽  
Quantum Dot ◽  
Aluminum Oxide ◽  
Thin Layer ◽  
Visible Light ◽  
Atomic Layer ◽  
Zno Films ◽  
Additional Layer ◽  
Layer Deposition

We have developed a visible-light phototransistor with excellent photodetection characteristics and stability via atomic layer deposition (ALD) to add a thin layer of aluminum oxide (Al2O3) to quantum dot (QD)/zinc oxide (ZnO) films.

Direct formation of anatase TiO2nanoparticles on carbon nanotubes by atomic layer deposition and their photocatalytic properties

2016 ◽  
Vol 27 (40) ◽  
pp. 405702 ◽  
Author(s):  
Sheng-Hsin Huang ◽  
Shih-Yun Liao ◽  
Chih-Chieh Wang ◽  
Chi-Chung Kei ◽  
Jon-Yiew Gan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Photocatalytic Properties ◽  
Layer Deposition ◽  
Direct Formation

scholarly journals Kinetic Monte Carlo Study of the Atomic Layer Deposition of Zinc Oxide

2018 ◽  
Vol 122 (47) ◽  
pp. 27044-27058 ◽  
Author(s):  
Timo Weckman ◽  
Mahdi Shirazi ◽  
Simon D. Elliott ◽  
Kari Laasonen
Keyword(s):  
Monte Carlo ◽  
Zinc Oxide ◽  
Atomic Layer Deposition ◽  
Kinetic Monte Carlo ◽  
Monte Carlo Study ◽  
Atomic Layer ◽  
Layer Deposition
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