More, Hannah

Droog, Alissa

doi:10.1515/ebr.morehannah

Cited by 1 publication

(1 citation statement)

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“…It is also important to mention that maximum absorption of the CR dyes surrounding 490 nm [51,52], having an Eg about 2.53 eV. We also note that the AO (monomer) dye has a maximum absorption around 492 nm, and consequently the Eg would be surrounding 2.52 eV [53,54]. Thus, it is assumed that the interaction between the substances that compose the solar cell were the best devices containing these dyes with smaller energy band gap, requiring less amount of solar energy for the movement of electrons between the layers of cells.…”

Section: Table 2 Results Obtained During Electrical Characterization ...mentioning

confidence: 99%

Assembly and characterization of ZnO nanoparticles for Grätzel's solar cells

Luz¹,

Hui²,

Roncoleta³

et al. 2018

Adv. Mater. Lett.

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This research aimed to build hybrid solar cells, based on Grätzel method. We used the Polyethylene Terephthalate (PET) polymer as a substrate containing a layer of Indium Tin Oxide (ITO). Films of ZnO nanoparticles (ZnO NPs) synthesized by Pechini Method, and four different dyes were tested: Congo Red (CR), Bromocresol Green (BG), Acridine Orange (AO) and a Ruthenium Complex (RC). ZnO NPs were analyzed by XRD, which generated peaks corresponding to hexagonal wurtzite crystalline structure. We also conducted analysis by UV-Vis. Spectroscopy and Transmission Electron Microscope (TEM). Rietveld analysis determined the crystal size of 115.23 ± 28.16 nm. The deposition of ZnO and dye thin films were made through spin-coating. The electrical properties of the formed films were characterized with Van der Pawn method. Efficiency in converting light in electricity under an OSRAM 20W light bulb was tested after the devices were built. The smaller sheet resistance results were obtained for material containing: PET/ITO/ZnO/CR and PET/ITO/ZnO/AO. As expected, the best open-circuit voltage (Voc) results reached were 64 and 73 mV to CR and AO, respectively. Therefore, the results demonstrated satisfactory interaction between the ZnO-Dye-Electrolyte layers.

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Section: Table 2 Results Obtained During Electrical Characterization ...mentioning

confidence: 99%