Sungkyunkwan University · Engineering
Professor Dong-Won Kang's research lab specializes in advanced materials for renewable energy applications, with a primary focus on perovskite solar cells and lithium-ion batteries. The lab develops novel nanostructured materials—such as doped metal oxides, conductive carbon networks, and transparent conductive oxides—to enhance device efficiency, stability, and scalability. Key research directions include optimizing hole transport layers, improving electron transport interfaces, and engineering robust, solution-processed electrodes and charge transport materials for next-generation optoelectronic devices.
Figures are computed from collected data and may differ slightly.
Hierarchically well-developed porous graphene nanofibers comprising N-doped graphitic C (NGC)-coated cobalt oxide hollow nanospheres are introduced as anodes for high-rate Li-ion batteries. For this, three strategies, comprising the Kirkendall effect, metal-organic frameworks, and compositing with highly conductive C, are applied to the 1D architecture. In particular, NGC layers are coated on cobalt oxide hollow nanospheres as a primary transport path of electrons followed by graphene-nanonetwor
We report a possible mechanism to cause poor performance and a novel dynamic spin-coating process for efficient perovskite solar cells.
Recently, nickel oxide (NiO<i><sub>x</sub></i>) thin films have been used as an efficient and robust hole transport layer (HTL) in inverted planar perovskite solar cells (IP-PSCs) to replace costly and unstable organic transport materials. However, the power conversion efficiency (PCE) of most IP-PSCs using NiO<i><sub>x</sub></i> HTLs is rather limited below 20% due to insufficient electronic conductivity of the NiO<i><sub>x</sub></i>. In this work, solution-processed Al-doped NiO<i><sub>x</sub>
The dynamic CsBr treatment on α-CsPbI<sub>3</sub> significantly improves the power conversion efficiency, reproducibility, and stability of all-inorganic CsPbI<sub>3−x</sub>Br<sub>x</sub> perovskite solar cells.
Abstract Transparent electrodes are essential to allow optical transparency for realizing semitransparent perovskite solar cells (ST‐PSCs). This study addresses gallium‐ and titanium‐doped indium oxide (IO:GT) between the electron transport layer (ETL) and top electrode to potentially replace conventional indium tin oxide (ITO) used in inverted ST‐PSCs. The shallower work function (−4.23 eV) of IO:GT than that (−4.69 eV) of conventional ITO contributes to suppressing the formation of the Schottk
We demonstrated a water-resistant PEDOT:PSS HTL by incorporating a photo-crosslinking agent into a PEDOT:PSS film. A crosslinking system was successfully formed inside the PEDOT:PSS film by simple and fast photo-polymerization of PCDSA monomers. Combination of the crosslinking system and MeOH surface treatment simultaneously improved the device efficiency and stability of both perovskite and polymer solar cells. The crosslinking system inside PEDOT:PSS changed its intrinsic water-soluble charact
Abstract The utilization of wide bandgap (WBG) tin halide perovskites (Sn‐HPs) offers an environmentally friendly alternative for multi‐junction Sn‐HP photovoltaics. Nonetheless, rapid crystallization leads to suboptimal film morphology and substantial creation of defect states, which undermine device efficiency. This study introduces 4‐Phenylthiosemicarbazide (4PTSC) as an additive to achieve a densely packed Sn‐HP film with fewer imperfections. The strong chemical coordination between SnI 2 an
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