Enhancing the electron lifetime and diffusion coefficient in dye-sensitized solar cells by patterning the layer of TiO2 nanoparticles

2016 ◽  
Vol 119 (11) ◽  
pp. 114302 ◽  
Author(s):  
Mohammad Sajedi Alvar ◽  
Mohammad Javadi ◽  
Yaser Abdi ◽  
Ezatollah Arzi
Keyword(s):  
Diffusion Coefficient ◽  
Solar Cells ◽  
Tio2 Nanoparticles ◽  
Dye Sensitized Solar Cells ◽  
Electron Lifetime ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
And Diffusion

scholarly journals Preparation and Characterization of Chitosan Binder-Based Electrode for Dye-Sensitized Solar Cells

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
En Mei Jin ◽  
Kyung-Hee Park ◽  
Ju-Young Park ◽  
Jae-Wook Lee ◽  
Soon-Ho Yim ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Solar Cells ◽  
Transit Time ◽  
Diffusion Length ◽  
Dye Sensitized Solar Cells ◽  
Electron Recombination ◽  
Recombination Lifetime ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
And Diffusion

A chitosan binder-based TiO2photoelectrode is used in dye-sensitized solar cells (DSSCs). Field-emission scanning electron microscope (FE-SEM) images revealed that the grain size, thickness, and distribution of TiO2films are affected by the chitosan content. With addition of 2.0 wt% chitosan to the TiO2film (D2), the surface pore size became the smallest, and the pores were fairly evenly distributed. The electron transit time, electron recombination lifetime, diffusion coefficient, and diffusion length were analyzed by IMVS and IMPS. The best DSSC, with 2.0 wt% chitosan addition to the TiO2film, had a shorter electron transit time, longer electron recombination lifetime, and larger diffusion coefficient and diffusion length than the other samples. The results of 2.0 wt% chitosan-added TiO2DSSCs are an electron transit time of  s, electron recombination lifetime of  s, diffusion coefficient of  cm2s−1, diffusion length of 14.81 μm, and a solar conversion efficiency of 4.18%.

scholarly journals Improved Performance of Dye-Sensitized Solar Cells with TiO2 Nanoparticles/Zn-Doped TiO2 Hollow Fiber Photoanodes

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2922 ◽  
Author(s):  
Zainal Arifin ◽  
Suyitno Suyitno ◽  
Syamsul Hadi ◽  
Bayu Sutanto
Keyword(s):  
Solar Cells ◽  
Tio2 Nanoparticles ◽  
Double Layer ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Photocurrent Density ◽  
Light Transmittance ◽  
Doped Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this study, dye-sensitized solar cells (DSSCs) were fabricated using double-layer photoanodes consisting of TiO2 nanoparticles (NPs) and Zn-doped TiO2 hollow fibers (HFs). The TiO2 HFs were prepared by co-axial electrospinning and used as the light-scattering layer in the DSSC. The thickness variations of the TiO2 NP and Zn-doped TiO2 HF photoanode layers affect the performance of the DSSC, especially the short-circuit photocurrent density. The thickness of the TiO2 NP layer significantly affected the absorbance of photons and N719 dye molecules in the double-layer photoanode, while that of the Zn-doped TiO2 HF layer affected the scattering of light, as indicated by the low light transmittance in the photoanode. Conventional DSSCs consist of single-layer photoanodes, and exhibit relatively low efficiency, i.e., 1.293% and 0.89% for TiO2 NP and Zn-doped TiO2 HF, respectively. However, herein, the highest efficiency of the DSSC (3.122%) was achieved with a 15 μm NP-5 μm HF photoanode, for which the short-circuit photocurrent density, open-circuit photovoltage, and fill factor were 15.81 mA/cm2, 0.566 V, and 34.91%, respectively.

Preparation of TiO2 nanoparticles by sparking technique for enhancing photovoltaic performance of dye-sensitized solar cells

2017 ◽  
Vol 43 (8) ◽  
pp. 4339-4352 ◽  
Author(s):  
Orawan Wiranwetchayan ◽  
Wonchai Promnopas ◽  
Supab Choopun ◽  
Pisith Singjai ◽  
Somchai Thongtem
Keyword(s):  
Solar Cells ◽  
Tio2 Nanoparticles ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Hydrothermal synthesis of TiO2 nanoparticles doped with trace amounts of strontium, and their application as working electrodes for dye sensitized solar cells: tunable electrical properties & enhanced photo-conversion performance

RSC Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 2358-2364 ◽  
Author(s):  
Hadja Fatima Mehnane ◽  
Changlei Wang ◽  
Kiran Kumar Kondamareddy ◽  
Wenjing Yu ◽  
Weiwei Sun ◽  
...  
Keyword(s):  
Solar Cells ◽  
Hydrothermal Synthesis ◽  
Electrical Properties ◽  
Tio2 Nanoparticles ◽  
Dye Sensitized Solar Cells ◽  
Performance Parameters ◽  
Dye Sensitized ◽  
Conversion Performance ◽  
Sensitized Solar Cells

Strontium (Sr) doped TiO2 nanoparticles are investigated with a view to studying the performance parameters of dye sensitized solar cells (DSSCs).

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