Publications by authors named "Dae Ho Song"
Objective: Acute aortic syndrome (AAS) is a fatal disease with high mortality. There were previous studies using aortic dissection detection risk score (ADD-RS) and D-dimer (DD) to screen AAS. There were screening failures in previous studies, suggesting the need for a more accurate tool.
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- Researchers created bilayer hybrid solar cells using the perovskite material CH3NH3PbI3 (MAPbI3) through a one-step spin-coating method with different solvent solutions.
- The HI-bilayer solar cells outperformed the DMSO-bilayer cells, achieving higher open-circuit voltage, short-circuit current density, and overall power conversion efficiency.
- The improvements in the HI-bilayer devices are attributed to better crystal quality, leading to fewer recombination losses and traps in the material compared to the DMSO-bilayer devices.*
A power conversion efficiency of 10.4% is demonstrated in planar CH3 NH3 PbBr3 hybrid solar cells without hysteresis of the J-V curve, by way of controlled crystallization in the spin-coating process. The high efficiency is attributed to the formation of a dense CH3 NH3 PbBr3 thin film by the introduction of HBr solution because the HBr increases the solubility of the CH3 NH3 PbBr3 and forms a thinner CH3 NH3 PbBr3 layer with full surface coverage.
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