scholarly journals A dual-functional NaLuF4:Yb3+/Er3+ material for enhancing photon harvesting in dye-sensitized solar cells

RSC Advances ◽  
2017 ◽  
Vol 7 (61) ◽  
pp. 38506-38511 ◽  
Author(s):  
Haiyong Guo ◽  
Zhen Hu ◽  
Li Zhao ◽  
Li Wan ◽  
Yadan Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Near Infrared ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Infrared Light ◽  
Dye Sensitized ◽  
Dual Functional ◽  
New Strategy ◽  
Sensitized Solar Cells

A new strategy to improve the efficiency of dye-sensitized solar cells by using the external near-infrared light harvesting and light-scattering dual-functional upconversion (UC) material NaLuF4:Yb3+/Er3+ is proposed.

Squaraine Dyes with Pyrylium and Thiopyrylium Components for Harvest of Near Infrared Light in Dye-Sensitized Solar Cells

2014 ◽  
Vol 118 (30) ◽  
pp. 16618-16625 ◽  
Author(s):  
Takeshi Maeda ◽  
Shohei Nitta ◽  
Hidekazu Nakao ◽  
Shigeyuki Yagi ◽  
Hiroyuki Nakazumi
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Dye Sensitized Solar Cells ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Dyes Amount and Light Scattering Influence on the Photocurrent Enhancement of Titanium Dioxide Hierarchically Structured Photoanodes for Dye-Sensitized Solar Cells

Coatings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 13 ◽  
Author(s):  
Wen-Yao Huang ◽  
Tung-Li Hsieh
Keyword(s):  
Titanium Dioxide ◽  
Solar Cells ◽  
Light Scattering ◽  
Light Harvesting ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Strong Light ◽  
Dye Sensitized ◽  
Dye Loading ◽  
Sensitized Solar Cells

In this study, we prepared and analyzed the properties of hill-like hierarchically structured titanium dioxide (TiO2) photoanodes for dye-sensitized solar cells (DSSCs). We expected that the presence of appropriately aggregated TiO2 clusters in the photoanode layer would translate to relatively strong light scattering and dye loading, increasing the photovoltaic efficiency. A detailed light-harvesting study was performed by employing polyvinyl alcohol (PVA) polymers of different molecular weights as binders for the aggregation of the TiO2 nanoparticles (P-25 Degussa). Hence, we obtained a series of TiO2 films, presenting a variety of morphologies. Their reflection, as well as absorbance of light by the attached dye, the amount of dye loading, and the performance of the fabricated DSSC devices were investigated. Our optimized device, with a relatively high dye loading and good light harvesting ability, was able to enhance the short-circuit current (Jsc) in the DSSCs by 23%.

Porphyrins as Potential Sensitizers for Dye-Sensitized Solar Cells

2010 ◽  
Vol 451 ◽  
pp. 29-40 ◽  
Author(s):  
Hiroshi Imahori
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Soret Band ◽  
Cell Performance ◽  
Absorption Bands ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Sensitized Solar Cells

Recently, dye-sensitized solar cells have attracted much attention relevant to global environmental issues. So far ruthenium(II) bipyridyl complexes have proven to be the most efficient TiO2 sensitizers in dye-sensitized solar cells. However, the highest power conversion efficiency has been stagnated in recent years. More importantly, considering that ruthenium is rare and expensive, novel dyes without metal or using inexpensive metal are desirable for highly efficient dye-sensitized solar cells. To fulfill the requirement, it is crucial to develop inexpensive novel dyes that exhibit high efficiencies in terms of light-harvesting, charge separation, and charge collection. Porphyrins are important classes of potential sensitizers for highly efficient dye-sensitized solar cells owing to their photostability and potentially high light-harvesting capabilities that would allow applications in thinner, low-cost dye-sensitized solar cells. However, typical porphyrins possess an intense Soret band at 400 nm and moderate Q bands at 600 nm, which does not match solar energy distribution on the earth. Therefore, the unmatched light-harvesting property relative to the ruthenium complexes has limited the cell performance of porphyrin-sensitized TiO2 cells. Elongation of the -conjugation and loss of symmetry in porphyrins cause broadening and red-shift of the absorption bands together with an increasing intensity of the Q bands relative to that of the Soret band. On the basis of the strategy, the cell performance of porphyrin-sensitized solar cells has been improved remarkably by the enhanced light absorption. The efficiency of porphyrin-sensitized solar cells could be improved significantly if the dyes with larger red and near-infrared absorption could be developed.

Enhanced light harvesting of dye-sensitized solar cells with TiO2 microspheres as light scattering layer

2017 ◽  
Vol 123 (3) ◽  
Author(s):  
Yingli Guan ◽  
Lixin Song ◽  
Yangyang Zhou ◽  
Xin Yin ◽  
Xueyao Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Scattering Layer ◽  
Dye Sensitized ◽  
Tio2 Microspheres ◽  
Sensitized Solar Cells
Sign in / Sign up

Export Citation Format

Share Document