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Transient stability of photovoltaic-hydro microgrid systems is poor due to lack of inertia and the intermittent nature of photovoltaic systems. The stability of such systems can be improved by using virtual synchronous machines which add inertia into the system to allow for higher PV penetration without losing stability. A PV-hydro system was simulated in MATLAB/Simulink to analyze the transient stability...
One asymmetric porphyrin 2-(1-acetyl-2-oxopropyl)-5,10,15,20-tetraphenylporphyrin and its Cu2+, Zn2+ complexes for dye-sensitized solar cell (DSSCs) are synthesized and characterized by single-crystal X-ray diffraction analysis. Dye-sensitized solar cells are fabricated with these porphyrins as dyes and the results show low energy conversion efficiency, which can be attributed to the steric hinderance...
A green solar cell based on a water-soluble polymer (PTEBS) and water dispersible TiO2 nanocrystals have been developed from all-water-solution processing. The light harvesting ability of water-soluble PTEBS were characterized by the UV-Vis absorption spectroscopy and the morphology of nanocrystalline TiO2 film were characterized by scanning electron microscopy (SEM). The PTEBS/TiO2 photovoltaic devices...
Hybrid bulk heterojunctions provide a technically and economically credible alternative to conventional silicon based photovoltaic technologies. New hybrid bulk heterojunction solar cells fabricated with a TiO2 aerogel and a series of porphyrins have been studied in this work. The porphyrins act as the sunlight absorber, electron donor, and hole-transporter, while the TiO2 aerogel is the electron...
Several 5-(4-carboxyphenyl)-10,15,20-tris(phenyl) porphyrin derivatives with different substituents (NO2, CN, CH3, OCH3, CN, NO2, Cl, N(CH3)2, N(Ph)2) in the para-positions of phenyl groups are designed and synthesized for systematic study of structural effect on their photovoltaic performance in dye-sensitized solar cells (DSSCs). Density Functional Theory (DFT) level calculation indicates the decrease...
Dramatic improvement of organic solar cells conversion efficiency is a significant technical challenge. This includes photon harvesting in the near infrared range of solar spectrum. This work presents a robust organic-inorganic hybrid heterojunction solar cell which possesses the capability to convert near infrared photons. Hybrid bulk heterojunctions were fabricated using rare earth decker phthalocyaninato...
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