Projects per year
Combined atomic/molecular layer deposition (ALD/MLD) technique enables the engineering of inorganic–organic superlattices with atomic/molecular layer accuracy for the individual layer thicknesses. Here we demonstrate how the optical and electronic properties of ϵ-Fe2O3 thin films can be gradually tuned with an insertion of monomolecular organic layers. In our ϵ-Fe2O3:benzene superlattice (SL) structures the thickness of individual iron oxide layers varies in the range of 1–17 nm. With decreasing ϵ-Fe2O3 layer thickness, that is, SL period, the films become more transparent. Moreover revealed from the UV–vis spectra is that the indirect optical bandgap increases from ≈2.0 eV for ϵ-Fe2O3 up to ≈2.3 eV for the SL films with the shortest SL period. We foresee that the ALD/MLD approach presented here for the ϵ-Fe2O3–benzene thin films can be exploited in fabricating many other interesting hybrid material systems with controlled optoelectronic properties.
- atomic layer deposition
- epsilon iron oxide
- inorganic–organic superlattices
- molecular layer deposition
- optical properties
FingerprintDive into the research topics of 'Tailoring of Optoelectronic Properties of ϵ-Fe2O3 Thin Films Through Insertion of Organic Interlayers'. Together they form a unique fingerprint.
- 2 Finished
01/09/2016 → 31/08/2020
Project: Academy of Finland: Other research funding
01/04/2016 → 31/08/2019
Project: Academy of Finland: Strategic research funding