2016
DOI: 10.1039/c6ra03137d
|View full text |Cite
|
Sign up to set email alerts
|

Electrical characterization of amorphous LiAlO2 thin films deposited by atomic layer deposition

Abstract: LiAlO 2 thin films deposited by atomic layer deposition (ALD) have a potential application as an electrolyte in three-dimensional (3D) all-solid-state microbatteries. In this study, Li-ion conductivity of such films is investigated by both in-plane and cross-plane methods. LiAlO 2 thin films with a Li composition of [Li]/ ([Li] + [Al]) ¼ 0.46 and an amorphous structure were grown by ALD with thicknesses of 90, 160 and 235 nm on different substrates. The electrical characterization was conducted by impedance sp… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

3
29
0

Year Published

2017
2017
2023
2023

Publication Types

Select...
7

Relationship

0
7

Authors

Journals

citations
Cited by 34 publications
(32 citation statements)
references
References 37 publications
3
29
0
Order By: Relevance
“…The electronic resistance of the uncoated NCM powder shows the expected linear behavior due to the hopping transport of the electrons. The extracted activation energy of E A ≈ 0.18 eV is also in good agreement with values from the literature for highly lithiated NCM of comparable composition, confirming the assumption of an electronic transport process. , Interestingly, also the coated samples reveal a comparable activation energy, although the activation energy of amorphous Al 2 O 3 or LiAlO 2 is expected to be significantly higher . These results show that despite the homogeneous coating, the electronic transport between NCM particles is barely affected, which is probably due to the thin coating thickness.…”
Section: Resultssupporting
confidence: 87%
See 1 more Smart Citation
“…The electronic resistance of the uncoated NCM powder shows the expected linear behavior due to the hopping transport of the electrons. The extracted activation energy of E A ≈ 0.18 eV is also in good agreement with values from the literature for highly lithiated NCM of comparable composition, confirming the assumption of an electronic transport process. , Interestingly, also the coated samples reveal a comparable activation energy, although the activation energy of amorphous Al 2 O 3 or LiAlO 2 is expected to be significantly higher . These results show that despite the homogeneous coating, the electronic transport between NCM particles is barely affected, which is probably due to the thin coating thickness.…”
Section: Resultssupporting
confidence: 87%
“…However, Al 2 O 3 as well as LiAlO 2 coating layers exhibit comparably high activation energies for lithium-ion diffusion of about 0.71 and 0.54 eV, respectively, which limits an efficient lithium-ion transport. Furthermore, the electronic conductivity between the NCM particles may be severely hindered due to the electronically insulating properties of the coating layers. , …”
Section: Introductionmentioning
confidence: 99%
“…These values are in agreement with previously reported ones in literature (0.2–0.45 eV) associated to the electronic and ionic transport phenomena in LCO. 49,54–59 Notice that this value is considerably lower than for LiAlO 2 , which lays above 0.7 eV in the temperature range RT-200 °C, 60 discarding the formation of this compound in a significant amount in agreement with Han et al 29 and XPS ( Fig. 3e ).…”
Section: Resultssupporting
confidence: 85%
“…Motivated by the design of inorganic TEGs and an organic device consisting of thousands of junctions manufactured by roll‐to‐roll production, we demonstrate a new design approach in so‐called pseudo‐in‐plane geometry. In this regard, we first report that in this geometry, N‐DPBI‐doped P(NDI2OD‐T2) thin films can reach electrical conductivities of up to (0.33 ± 0.05) S cm −1 , which is not only higher than in in‐plane geometry reported previously [ 2,32,35,41 ] but also competitive with other organic n‐type materials. [ 3,4 ] The corresponding power factor amounts to (2.4 ± 0.27) μW K −2 m −1 .…”
Section: Resultsmentioning
confidence: 71%
“…The electrical conductivity values σ were calculated from the resistance ( R ) versus temperature ( T ) curve R(T) via the formulaσ=d/(Rtl)where t is the thickness, l the length, and d the distance of the electrodes. [ 41 ]…”
Section: Methodsmentioning
confidence: 99%