2. Synthesis of Organic Semiconductor Nanoparticles
Although the aqueous route is an elegant alternative to the organic solvents required for solar cell fabrication, it faces several major challenges. In practice, virtually all organic semiconductors used to form the active layer of an organic photovoltaic cell are insoluble in water and exhibit high hydrophobicity.
It is important to note that the introduction of polar and/or ionic functional groups enables the solubilization of semiconductor materials in an aqueous medium. However, these chemical modifications remain demanding and are applicable to only a limited number of materials.
Furthermore, they irreversibly alter their intrinsic properties, energy levels, aggregation, and surface tension. This results in modest performance once integrated into solar cells, with conversion efficiencies peaking at...
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Synthesis of Organic Semiconductor Nanoparticles