scholarly journals Mesoporous ZnO thin films obtained from molecular layer deposited “zincones”

2019 ◽  
Vol 48 (37) ◽  
pp. 14178-14188 ◽  
Author(s):  
Alberto Perrotta ◽  
Richard Berger ◽  
Fabian Muralter ◽  
Anna Maria Coclite
Keyword(s):  
Thin Films ◽  
Molecular Layer ◽  
Zno Thin Films ◽  
Characterization Techniques ◽  
Mesoporous Zno

The synthesis of MLD-derived mesoporous ZnO with 20% of porosity is demonstrated and studied by advanced in situ characterization techniques.

Ultrafast Dynamics of the Indoline Dye D149 on Mesoporous ZnO and Al2O3 Thin Films

2015 ◽  
Vol 229 (10-12) ◽  
Author(s):  
Oliver Flender ◽  
Peter W. Lohse ◽  
Juan Du ◽  
Torsten Oekermann ◽  
Mirko Scholz ◽  
...  
Keyword(s):  
Thin Films ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Zno Thin Films ◽  
Ultrafast Dynamics ◽  
Eosin Y ◽  
Mesoporous Thin Films ◽  
Mesoporous Zno ◽  
Mesoporous Thin Film ◽  
20 Nm

AbstractUltrafast photoinduced electron injection and subsequent relaxation steps of the indoline dye D149 were investigated for mesoporous thin films using pump–supercontinuum probe (PSCP) transient absorption spectroscopy in the range 370–770 nm. Three types of mesoporous ZnO layers were compared: Electrodeposited ZnO thin films prepared by using the structure-directing agents (1) Eosin Y (EY) and (2) Coumarin 343 (C343), which are known to produce ZnO layers of different morphology; and (3) mesoporous ZnO thin films consisting of sintered nanoparticles with a diameter of 20 nm. As a reference system, we used a “non-injecting” mesoporous thin film with large band-gap, consisting of Al

In situ resistance measurement during FCVA deposition of ZnO thin films

2004 ◽  
Vol 30 (7) ◽  
pp. 2019-2022
Author(s):  
S.M. Sim ◽  
B.J. Chen ◽  
X.W. Sun
Keyword(s):  
Thin Films ◽  
Resistance Measurement ◽  
Zno Thin Films

Sensing of Ethanol with Nanosize FeZnO Thin Films

2008 ◽  
Vol 47-50 ◽  
pp. 1117-1120
Author(s):  
G.H. Kuo ◽  
H. Paul Wang ◽  
H.H. Hsu ◽  
Chih Ju G. Jou ◽  
Y.M. Chiu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
High Sensitivity ◽  
Zno Thin Films ◽  
X Ray ◽  
Doped Zno ◽  
Low Sensitivity ◽  
X Ray Absorption ◽  
Exafs Spectra

In the present work, sensing of ethanol on the ZnO thin films doped with Fe (5-50%) have been investigated. Nature of the sensing species in the nanosize Fe-doped ZnO (FeZnO) thin films has also been studied by in situ extended X-ray absorption fine structure (EXAFS) spectroscopy. By XRD, it is found that ZnO and ZnFe2O4 are the main compounds in the ZnO-Fe thin films. The thin film containing 5% of Fe has a high sensitivity (Rair/Rethanol>80) when sensing of ethanol at 300 K. On the contrary, the thin films with Fe fractions of 20-50% have a very low sensitivity to ethanol (Rair/Rethanol<15). In the presence of ethanol, the EXAFS spectra show that the bond distances of Zn-O and Fe-O in the thin films are 1.90 and 1.98 Å, respectively and restored to 1.91 and 1.97 Å in the absence of ethanol.

scholarly journals Single-Crystal Mesoporous ZnO Thin Films Composed of Nanowalls

2009 ◽  
Vol 113 (5) ◽  
pp. 1791-1794 ◽  
Author(s):  
Xudong Wang ◽  
Yong Ding ◽  
Zhou Li ◽  
Jinhui Song ◽  
Zhong Lin Wang
Keyword(s):  
Thin Films ◽  
Single Crystal ◽  
Zno Thin Films ◽  
Mesoporous Zno

Synthesize of Mesoporous ZnO Thin Films and Gas Sensing Property

2014 ◽  
Vol 960-961 ◽  
pp. 157-160
Author(s):  
Min Hee Hong ◽  
Yong June Choi ◽  
Tae Won Lee ◽  
Hee Yoon Chung ◽  
Hyung Ho Park
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Condensation Reaction ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Gas Sensitivity ◽  
Complex Agent ◽  
Sol Gel Process ◽  
Sensor Properties ◽  
Mesoporous Zno

In this work, ordered mesoporous ZnO thin films was synthesized and gas sensor properties were introduced. Mesoporous ZnO thin films were successfully formed by sol-gel process. In ZnO structure, complex agent (MEA) was used for the hydration and condensation reaction. According to the change of MEA concentration, porosity and pore arrangement, specific surface area could be changed. As complex agent concentration decreased, pore ordering was increased and gas sensitivity has the high value (8.01).

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