Inexpensive organic dyes-sensitized zinc oxide nanoparticles photoanode for solar cells devices

Shaat, Samy K.; Zayed, H. A.; Musleh, H.; Shurrab, Nabil Kh.; Issa, Ahmed; Asad, Jihad; Dahoudi, Naji Al

doi:10.1117/1.jpe.7.025504

Cited by 13 publications

(9 citation statements)

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“…An enhance photon absorption can be noted in the visible region in the presence of Ag NPs. Furthermore, the highest absorption band can be observed over the range of 350-359 nm, which is ascribed to the band-to-band transition of the ZnO NPs [24]. This exciton absorption peak is being less than of the bulk ZnO (388 nm) which indicates the monodispersing of ZnO NPs as suggested by Brintha et al [25].…”

Section: Hr-tem Analysismentioning

confidence: 75%

Nanoplasmonic for Solar Energy Conversion Devices

Shaat¹,

Musleh²,

Asad³

et al. 2020

Solar Cells

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The effect of nanoplasmonic (Ag) on the performance of DSSCs has been studied in doped and undoped ZnO (DZ and UZ) NPs, which were prepared by the urea-assisted combustion route. Different techniques were conducted to characterize DZ and UZ NPs. XRD patterns were indexed to the hexagonal wurtzite structure of ZnO NPs (ICSD-52362). The values of average crystalline size of UZ and DZ (1.0 mol% Ag) NPs were 20.45 and 22.30 nm, respectively. HR-TEM micrograph revealed good crystallization with an intermediate or poor agglomeration with distribution of semispherical morphologies of ZnO NPs. The energy bandgap of UZ and DZ NPs was changed from 3.21 to 3.31 eV. The deconvolution of the PL spectra recognized eight peaks into near ultraviolet (NUV) and visible regions. The PL emission of visible region overshadowed NUV transition. The photovoltaic cell with the doped photoanode DZ:1.0 mol% Ag exhibited the best performance parameters: Voc = 0.46 V, Jsc = 7.81 mA.cm À2 , Pm = 1.91, FF = 51%, and η = 1.91%. A double exponential function was used as a powerful fitting function for the TOCVD data. The results revealed that τ n in the UZ NPs photoanode was longer than that in the DZ:1.0 mol% Ag NPs photoanode.

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Section: Hr-tem Analysismentioning

confidence: 75%

Nanoplasmonic for Solar Energy Conversion Devices

Shaat¹,

Musleh²,

Asad³

et al. 2020

Solar Cells

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“…To measure the adsorbed dye amount on the coloured films, the photoanode was immersing in a 0.1M NaOH solution of water and ethanol (1:1, v/v). UV-Vis spectrophotometer was employed to measure the dye concentration of the desorbeddye solution as described in previous work [25].…”

Section: Fabricate and Assembly Of The Dsscs Devicesmentioning

confidence: 99%

“…The PLES of ZnO NPs typically shows a linear emission in the Near-Ultraviolet range (NUVR) (originating as a result of exciton mechanism) and in the visible region which is attributed to defects in ZnO NPs [18]. The PLES of ZnO in visible region is attributed to the interior energy traps or defects present within the bandgap such as interstitials, imperfections, vacancies, impurities, anti-sites and principally, from the various oxygen vacancies [25]. The main features of the PLES of ZnO NPs can be classified into two regions: NUVR and visible.…”

Section: Pl Spectra Analysismentioning

confidence: 99%

“…9) is used as a powerful fitting function for the TOCVD data as depicted in Eq. (2) to extract the decay parameters [25]. where, V o is the offset of the V oc.…”

Section: Transient Open Circuit Voltage Decay Measurementmentioning

confidence: 99%

“…When compared with other organic dyes, Rhodamine B was used as a photosensitizer, which is thousand times cheaper than the Ru-based dye. In addition, it is easier to recycle metal-free dyebased cells [25]. Our ongoing work enhances the anchoring between semiconductor surface (ZnO or TiO 2 ) and dye branches based on the modification of Rhodamine B dye by adding some functional groups.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of the performance of dye-sensitized solar cells using sensitized zinc oxide nanoparticles by rhodamine B dye

et al. 2019

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I N THE PRESENT work, ZnO nanoparticles were synthesized via a simple wet chemical (hydrothermal) technique using zinc acetate dihydrate (Zn(CH 3 COO) 2. 2H 2 O) as a row material dissolved into absolute methanol and aqueous NaOH as precipitation agent. The X-ray diffractometer (XRD) patterns showed a standard hexagonal wurtzite structure of ZnO NPs with average particle size of about 28±2 nm. High resolution-transmission electron microscopy (HR-TEM) micrograph of ZnO NPs showed semi-spherical particles with an average size of about 25.3±6 nm, which agreed well with the XRD results. UV-Vis spectrum of the ZnO NPs revealed the highest absorption band at 366.4 nm and the optical energy gap (E g ) was about 3.12 eV. The Photoluminescence spectrophotometer (PL) spectrum emission illustrated lower UV emission than the visible emission. This indicated to the high defect density in ZnO sample. The effect of concentration of cost-effective Rhodamine B dye on the performance of dye-sensitized solar cells) DSSCs) based on ZnO NPs has been studied. The best performance among the five concentrations was 0.7 mM. The photon to electric energy conversion efficiency of the DSSCs has been found to increase by eight times from 0.07 to 0.58 %. Transient open-circuit voltage decay (TOCVD) method has been used to investigate the electron lifetime (τn) and the electron recombination velocity (K rec ) in DSSCs, by using the double exponential function. The results revealed that the Rhodamine B dye can be an efficient dye as a low-cost sensitizing dye for DSSCs.

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