PMID- 31714555
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191121
LR  - 20191121
IS  - 1463-9084 (Electronic)
IS  - 1463-9076 (Linking)
VI  - 21
IP  - 45
DP  - 2019 Dec 7
TI  - Ionic liquid/ZnO(0001[combining macron]) single crystal and epitaxial film 
      interfaces studied through a combination of electrochemical measurements and a 
      pulsed laser deposition process under vacuum.
PG  - 25506-25512
LID - 10.1039/c9cp04875h [doi]
AB  - O-Polar ZnO(0001[combining macron]) single crystals and ZnO and Mg-doped ZnO 
      (MgZnO) films which were subsequently deposited on the ZnO crystals by a pulsed 
      laser deposition (PLD) method were electrochemically investigated through the 
      interfaces with ionic liquid (IL) in a vacuum. The sample surfaces were confirmed 
      to be atomically clean and flat by reflection high energy electron diffraction 
      (RHEED) observation, prior to their electrochemical measurements. Electrochemical 
      impedance spectroscopy (EIS) and cyclic voltammetry (CV) were then performed, and 
      the donor density, flat band potential of these ZnO samples, and the electric 
      double layer capacitance at the IL/ZnO interfaces were successfully evaluated. 
      The flat band potentials of ZnO and MgZnO films were found to shift to more 
      negative potentials relative to those of the single crystal ZnO, with different 
      values for thicker films, respectively. Some possible origins of the different 
      flat band potentials between ZnO and MgZnO films, and their film thickness 
      dependence of the flat band potential will be discussed in this paper.
FAU - Kanai, Mariko
AU  - Kanai M
AD  - Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 
      Aramaki Aza Aoba, Aoba-ku Sendai, 980-8579, Japan. y-matsumoto@tohoku.ac.jp.
FAU - Watanabe, Ko
AU  - Watanabe K
AD  - Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 
      Aramaki Aza Aoba, Aoba-ku Sendai, 980-8579, Japan. y-matsumoto@tohoku.ac.jp.
FAU - Maruyama, Shingo
AU  - Maruyama S
AUID- ORCID: 0000-0002-6608-2219
AD  - Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 
      Aramaki Aza Aoba, Aoba-ku Sendai, 980-8579, Japan. y-matsumoto@tohoku.ac.jp.
FAU - Matsumoto, Yuji
AU  - Matsumoto Y
AUID- ORCID: 0000-0003-1819-5566
AD  - Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 
      Aramaki Aza Aoba, Aoba-ku Sendai, 980-8579, Japan. y-matsumoto@tohoku.ac.jp.
LA  - eng
PT  - Journal Article
DEP - 20191112
PL  - England
TA  - Phys Chem Chem Phys
JT  - Physical chemistry chemical physics : PCCP
JID - 100888160
SB  - IM
EDAT- 2019/11/13 06:00
MHDA- 2019/11/13 06:01
CRDT- 2019/11/13 06:00
PHST- 2019/11/13 06:00 [pubmed]
PHST- 2019/11/13 06:01 [medline]
PHST- 2019/11/13 06:00 [entrez]
AID - 10.1039/c9cp04875h [doi]
PST - ppublish
SO  - Phys Chem Chem Phys. 2019 Dec 7;21(45):25506-25512. doi: 10.1039/c9cp04875h. Epub 
      2019 Nov 12.