Publications by authors named "Heesuk Jung"
NiO is widely used for hole-transporting layers in p-i-n-type perovskite solar cells (PSCs) due to its stability, wide bandgap (≈3.5 eV), and solution processability. However, during solution processing, oxygen exposure can induce non-stoichiometry, forming Ni.
View Article and Find Full Text PDFOrganic-inorganic hybrid tandem solar cells attract a considerable amount of attention due to their potential for realizing high efficiency photovoltaic devices at a low cost. Here, highly efficient triple-junction (TJ) hybrid tandem solar cells consisting of a double-junction (DJ) amorphous silicon (a-Si) cell and an organic photovoltaic (OPV) rear cell were developed. In order to design the TJ device in a logical manner, a simulation was carried out based on optical absorption and internal quantum efficiency.
View Article and Find Full Text PDFEnhanced photovoltaic properties and long-term stability in plasmonic dye-sensitized solar cells via noncorrosive redox mediator.
ACS Appl Mater Interfaces
November 2014
Article Synopsis
- The study highlights the use of localized surface plasmon resonance (LSPR) to enhance the efficiency of dye-sensitized solar cells (DSSCs) by incorporating size-controlled gold nanoparticles (Au NPs) into the design.
- The synthetic method for Au NPs allows for mass production and uniformity, which leads to an 11% increase in power conversion efficiency due to improved photocurrent generation.
- Additionally, the integration of a cobalt-based noncorrosive redox mediator significantly boosts the long-term stability of these plasmonic structures, maintaining performance for up to 1000 hours, representing a breakthrough in the durability of plasmonic DSSCs.
Chlortetracycline (CTC) is a hazardous material in aquatic environments. This study was focused on optimization of photocatalytic ozonation processes for removal of CTC from wastewater at pH 2.2 and 7.
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