A5044338462- Magnetic and transport properties of perovskites and related materials
- Electronic and Structural Properties of Oxides
- Ferroelectric and Piezoelectric Materials
- Advanced battery technologies research
- Advancements in Solid Oxide Fuel Cells
- Organic Electronics and Photovoltaics
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Perovskite Materials and Applications
- Multiferroics and related materials
- Photorefractive and Nonlinear Optics
- Catalysis and Oxidation Reactions
- Conducting polymers and applications
Sungkyunkwan University
2017-2018
Triple perovskite, Nd 1.5 Ba CoFeMnO 9−δ , enriched with oxygen defects shows high activity and durability as a bifunctional electrocatalyst.
Topotactic phase transformation enables structural transition without losing the crystalline symmetry of parental and provides an effective platform for elucidating redox reaction oxygen diffusion within metal oxides. In addition, it tuning emergent physical properties complex oxides, through strong interaction between lattice electronic degrees freedom. this communication, structure evolution SrFeOx epitaxial thin films is identified in real-time, during progress reversible topotactic...
Organic–inorganic hybrid perovskite solar cells are attracting the attention of researchers owing to high level performance they exhibit in photovoltaic device applications. However, attainment an even higher is hindered by their anomalous current–voltage ( I – V ) hysteresis behavior. Even though experimental and theoretical studies have suggested that materials may a ferroelectric nature, it still far from being fully understood. In this study, origin behavior CH 3 NH PbI thin films...
Transition-metal oxides (TMOs) with brownmillerite (BM) structures possess one-dimensional oxygen vacancy channels (OVCs), which play a key role in realizing high ionic conduction at low temperatures. The controllability of the channel orientation, thus, possesses great potential for practical applications and would provide better visualization diffusion pathways ions TMOs. In this study, orientations OVCs BM-SrFeO2.5 are stabilized along two crystallographic directions epitaxial thin films....
The direction of ferroelectric polarization is prescribed by the symmetry crystal structure. Therefore, rotation largely limited, despite opportunity it offers in understanding important dielectric phenomena such as piezoelectric response near morphotropic phase boundaries and practical applications memory. In this study, we report observation continuous order–disorder-type LiNbO3 thin films. spontaneous could be tilted from an out-of-plane to in-plane film controlling Li vacancy...
The real-time evolution of the electronic phase during topotactic transformation in a SrFeO x thin film is shown.In article number 1606566, Woo Seok Choi and co-workers report metal-insulator transition epitaxial films.A pressure-temperature diagram constructed based on optical spectroscopy thermodynamic calculation.