Enhancing the Spectral Response of Mesoporous ZnO Films of Dye–sensitized Solar Cells by Incorporating Metal-free Organic Sensitizer and N719 dye

Chen, Ying-Jiun; Chang, Ying-Chung; Lin, Lu‐Yin; Chang, Wei‐Chen; Chang, Shyang-Jye

doi:10.1016/j.electacta.2015.08.034

Cited by 19 publications

(6 citation statements)

References 21 publications

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“…[18][19][20][21][22][23] As a consequence, taking the absorption spectra and the light-harvesting efficiency into account, the cosensitization approach employing two or more dyes with complementary absorption spectra co-adsorbed on TiO 2 lms has generated promising results in DSSCs. [24][25][26][27][28][29][30][31][32][33] For example, cosensitization of YD2-o-C8 with a D-p-A organic dye (Y123) possessing the complementary absorption spectrum achieved incident photon-to-electron conversion efficiency (IPCE) of >90% on the whole absorption spectra and boosted the cell device performance to the PCE of 12.3% in 2011, 34 which motivates further investigation on the co-sensitization in DSSCs. Ho et al rst reported the co-sensitization in plastic DSSCs with black dye/ FL and N719/FL at low temperature, which showed pronounced improvement in PCE.…”

Section: Introductionmentioning

confidence: 99%

Stepwise co-sensitization of two metal-based sensitizers: probing their competitive adsorption for improving the photovoltaic performance of dye-sensitized solar cells

Zhao

Zhang

et al. 2017

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Stepwise co-sensitization of two metal-based sensitizers: probing their competitive adsorption for improving the photovoltaic performance of dye-sensitized solar cells

Zhao

Zhang

et al. 2017

RSC Adv.

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“…At higher concentrations of no further increase in the optical absorption was observed. This revealed that the adsorption saturation limit of TB, SPD and TB dyes on Cr-ZnO is 3 mM, 3 mM and 1 mM, respectively [30].…”

Section: Uv-visible Absorption Analysis Of Dye-sensitized Cr-zno and mentioning

confidence: 95%

Optical and electrical properties of organic dye sensitized Cr–ZnO and Ni–CdO nanoparticles

Yathisha

Nayaka

2020

SN Appl. Sci.

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In this work presents an approach for the selection of dye sensitized Cr-ZnO and Ni-CdO nanoparticles as a photo anode material for the applications of DSSCs. The 4 wt% Cr-ZnO and Ni-CdO nanoparticles were synthesized through simple and fast microwave combustion method. X-ray difraction (XRD) was used for the detection of crystalline phases and size of the synthesized nanomaterials. It confirms the existence of hexagonal wurtzite phase of Cr-ZnO (30-35 nm) and cubic phase of Ni-CdO (43-45 nm) nanoparticles. SEM and TEM micrographs of Cr-ZnO and Ni-CdO reveal that the synthesized samples are prismatic and spherical shaped, respectively. Optical absorption of Cr-ZnO and Ni-CdO nanoparticles before and after sensitization with Trypan Blue (TB), SPADNS (SPD) and Evans Blue (EB) dyes were examined through UV-Visible spectroscopy. The results show that the selected dyes improve the absorption edge of Cr-ZnO and Ni-CdO nanoparticles to longer wavelength side. HOMO and LUMO energy levels of the dyes were calculated by cyclic voltammetry. I-V characteristics of Cr-ZnO and Ni-CdO films before and after sensitization with dyes revealed the influence of dye sensitization on photo conductivity of Cr-ZnO and Ni-CdO nanoparticles.

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“…Many researchers including our group investigated various cosensitization combinations using organic sensitizers incorporated with electron-rich donors such as phenothiazine, indole, carbazole, and triphenylamine with ruthenium complexes and showed excellent performance. [30][31][32][33][34][35][36] However, in the literature, there are no reports available on the cosensitization combination of highly rigidified quinoxaline-based dyes and ruthenium dyes. The quinoxaline-based sensitizers have been actively investigated in recent years and the impressive improvement of photovoltaic performance has been achieved.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Rigidified Quinoxaline‐based Co‐Sensitizers Carrying Long Alkyl Chains for Ruthenium‐Complex‐Sensitized DSSCs**

Lyu

El‐Shafei

2022

ChemistrySelect

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In this paper, cosensitized DSSCs(Dye-Sensitized Solar Cell) using quinoxaline-based co-sensitizers along with a well-known ruthenium dye were fabricated, and their photophysical properties and photovoltaic characteristics were measured to comprehensively assess the effect of molecular architecture on the photovoltaic performance of devices. We revealed the key role of bulky rigid quinoxaline-based co-sensitizers in enhancing the overall efficiency of DSSCs for the first time. From the results, it is evident that the co-sensitizer exhibited excellent performance in improving the photocurrent of cosensitized DSSCs. The cell cosensitized with 0.2 mm of quinoxaline-based co-sensitizer and 0.2 mm of ruthenium dye, exhibited the highest efficiency of 7.88 % (J SC = 20.82 mA cm À 2 , V OC = 0.614 V, FF = 61.6 %) when compared to ruthenium dye alone. Smaller organic co-sensitizers cannot make up for the weak absorption in the range of about 350-600 nm of ruthenium dyes, but also filled up the space between the bulky ruthenium dye molecules, leading to more effective coverage on the TiO 2 surface. Hence, it was observed that the FF(Fill Factor) values were improved for all the cells. Thus, based on the abovementioned results, quinoxaline-based co-sensitizer showed good potential in enhancing photovoltaic efficiency of DSSCs at the appropriate concentration.

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Enhancing the Spectral Response of Mesoporous ZnO Films of Dye–sensitized Solar Cells by Incorporating Metal-free Organic Sensitizer and N719 dye

Cited by 19 publications

References 21 publications

Stepwise co-sensitization of two metal-based sensitizers: probing their competitive adsorption for improving the photovoltaic performance of dye-sensitized solar cells

Stepwise co-sensitization of two metal-based sensitizers: probing their competitive adsorption for improving the photovoltaic performance of dye-sensitized solar cells

Optical and electrical properties of organic dye sensitized Cr–ZnO and Ni–CdO nanoparticles

Highly Efficient Rigidified Quinoxaline‐based Co‐Sensitizers Carrying Long Alkyl Chains for Ruthenium‐Complex‐Sensitized DSSCs**

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