Dye-sensitized solar cells based on visible-light-active TiO2 heterojunction nanoparticles

Simya, O.K.; Selvam, M.; Karthik, A.; Rajendran, V.

doi:10.1016/j.synthmet.2013.12.005

Cited by 23 publications

(8 citation statements)

References 18 publications

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“…Among the non-metals are the only anionic dopants, which have a strong influence on the VB. Non-metal dopants are carbon, 99,106,107 nitrogen, 82,98,99, fluorine, 99,141,[144][145][146][147] sulphur 82,118,120,128 and iodine. 148 4.3.1 Carbon.…”

Section: Non-metalsmentioning

confidence: 99%

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Doping of TiO₂for sensitized solar cells

2015

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This review gives a detailed summary and evaluation of the use of TiO2 doping to improve the performance of dye sensitized solar cells. Doping has a major effect on the band structure and trap states of TiO2, which in turn affect important properties such as the conduction band energy, charge transport, recombination and collection. The defect states of TiO2 are highly dependent on the synthesis method and thus the effect of doping may vary for different synthesis techniques, making it difficult to compare the suitability of different dopants. High-throughput methods may be employed to achieve a rough prediction on the suitability of dopants for a specific synthesis method. It was however found that nearly every employed dopant can be used to increase device performance, indicating that the improvement is not so much caused by the dopant itself, as by the defects it eliminates from TiO2. Furthermore, with the field shifting from dye sensitized solar cells to perovskite solar cells, the role doping can play to further advance this emerging field is also discussed.

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Section: Non-metalsmentioning

confidence: 99%

“…99,107 4.3.2 Nitrogen. Nitrogen doping usually causes a red shift of the absorption band edge 82,[108][109][110][111][112][113][114][115][116][117][118][119] instigated by a positive shift of V FB (Fig. 3c), which improves electron injection.…”

Section: Non-metalsmentioning

confidence: 99%

Doping of TiO₂for sensitized solar cells

2015

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“…Ni, Fe, Cd, Be, Mg, Mn) and other elements called quaternary chalcogenides. These elements are available in the Earth's crust, have low cost on production, non-toxic, have an energy gap near to the ideal value, and have a high absorption coefficient [3,4]. Thus, thin films are made of these materials.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Efficiency of the CZTS/Cds/Zno/ITO Solar Cell By Back Reflection and Buffer Layers Using SCAPS -1D

Ganem

Saleh

2021

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CZTS / CdS / ZnO / ITO solar cell was studied using Solar Cell Capacitance Simulato-1D (SCAPS-1D) program. We performed an improvement on the theoretical cell by increasing the doping and thickness of some layers. As a result, the efficiency was shifted from 2.18% to 6.17% and several back reflection layers (BSL) were introduced on the enhanced cell until. We obtained a highest conversion efficiency of 13.99%. The best reflection layer (CZTSSe) was combined with the best buffer layer (CdSe), with thickness of 0.9µm, on the enhanced cell. Thereby, we obtained a cell with a conversion efficiency of 16.53%. A second improvement was made to the best obtained cell, where the CZTSSe with thickness of 0.05µm and the CdSe with thickness of 0.9µm were combined. Consequently, the efficiency was increased from 16.53% to 21.76%. By comparing the experimental results with those obtained with the program, it was found that the program simulates reality, i.e. the experimental and theoretical results matched.

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“…Generally, crystalline ZnS is an important II-IV compound semiconductor with a wide direct energy band gap (3.7 eV), which has been successfully used in UV light emitting diodes, injection laser displays, efficient phosphors in flat-panel, photo catalysis, fuel cells, LED, non-linear optical and energy storage devices [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%