54 citations · 57 across the 7 of their papers we have counts for
7 papers
Chemical States and Local Structure in Cu-Deficient CuInSe2 Thin Films: Insights into Engineering and Bandgap Narrowing
Ahmed Yousef Mohamed, Byoung Gun Han, Hyeonseo Jang +6
The Cu-deficient CuxInSe2 (x larger than 0.3) phase can be stabilized as a thin film. A uniform Cu-deficient composition with a chalcopyrite structure was obtained by the precision…
Electron-Hole Separation in Ferroelectric Oxides for Efficient Photovoltaic Responses
Donghoon Kim, Hyeon Han, June Ho Lee +3
Despite their potential to exceed the theoretical Shockley-Queisser limit, ferroelectric photovoltaics (FPVs) have performed inefficiently due to their extremely low photocurrents.…
Switchable Ferroelectric Photovoltaic Effects in Epitaxial Thin Films of h-RFeO3 having Narrow Optical Band Gaps
Hyeon Han, Donghoon Kim, Ji Hyun Lee +5
Ferroelectric photovoltaics (FPVs) have drawn much attention owing to their high stability, environmental safety, anomalously high photovoltages, coupled with reversibly switchable…
Two Distinct Modes of Hydrogen-Bonding Interaction in the Prototypic Hybrid Halide Perovskite, Tetragonal CH3NH3PbI3
June Ho Lee, Jung-Hoon Lee, Eui-Hyun Kong +1
In spite of the key role of hydrogen bonding in the structural stabilization of the prototypic hybrid halide perovskite, CH3NH3PbI3 (MAPbI3), little progress has been made in our i…
Ferroelectric polarization switching with a remarkably high activation-energy in orthorhombic GaFeO3 thin films
Seungwoo Song, Hyun Myung Jang, Nam-Suk Lee +5
Orthorhombic GaFeO3 (o-GFO) with the polar Pna21 space group is a prominent ferrite by virtue of its piezoelectricity and ferrimagnetism, coupled with magneto-electric effects. Her…
Anomalous domain periodicity observed in ferroelectric PbTiO3 nanodots with 180o stripe domains
Jong Yeog Son, Jung-Hoon Lee, Young-Han Shin +1
PbTiO3-based nano-scale dots and tubes have received a great deal of attention owing to their potential applications to nonvolatile memories and multi-functional devices. As for th…
Effects of spin-orbit interaction on magnetic and electronic structures in antiferromagnetic LaFeAsO
Sehoon Oh, Jung-Hoon Lee, Hyun Myung Jang +1
Magnetic and electronic structures in LaFeAsO in the single-stripe-type antiferromagnetic (AFM) phase are studied using first-principles density-functional calculations including t…