Fabrication of textured substrates for dye-sensitized solar cells using polydimethylsiloxane nanoimprint lithography

2019 ◽  
Vol 8 (6) ◽  
pp. 491-497
Author(s):  
Na Yang ◽  
Chiemi Oka ◽  
Seiichi Hata ◽  
Junpei Sakurai
Keyword(s):  
Solar Cells ◽  
Nanoimprint Lithography ◽  
Dye Sensitized Solar Cells ◽  
Transparent Conductive Oxide ◽  
Optical Simulation ◽  
Oxide Interface ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Anodic Aluminum Oxide Templates ◽  
Sensitized Solar Cells

Abstract We proposed a fabrication of nanoimprinted textures on a front glass/transparent conductive oxide interface for dye-sensitized solar cells (DSSCs). These textures were fabricated through polydimethylsiloxane (PDMS) nanoimprint lithography on organosilsesquioxane solution. The texture structures were estimated via optical simulation. Master molds were anodic aluminum oxide templates with nano-texture (N-Tx) and micro-nano double texture (D-Tx). Meanwhile, replicate molds used a hard PDMS. Fluorine-doped tin oxide and titanium dioxide were deposited on textured glass substrates to generate electrodes for DSSCs. Unlike the DSSCs without texture, textured DSSCs realized 11.4% (N-Tx) and 10% (D-Tx) improvement in conversion efficiency.

Polyaniline/Graphene/Multi-Walled Carbon Nanotube Composites as Counter Electrode for Dye-Sensitized Solar Cells

2014 ◽  
Vol 1667 ◽  
Author(s):  
Yen-Chen Shih ◽  
Hsiao-Li Lin ◽  
King-Fu Lin
Keyword(s):  
Solar Cells ◽  
Composite Film ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Weight Ratio ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Multi Walled Carbon Nanotube ◽  
Electrochemical Deposition Method ◽  
Sensitized Solar Cells

ABSTRACTTo provide a counter electrode with lower-cost and simple production method for dye-sensitized solar cells (DSSCs), we developed polyaniline/graphene nanoplatelet/multi-walled carbon nanotube (PANi/GNP/MWCNT) composite films growing on glass substrates by using chemical/electrochemical deposition method and on fluorine-doped tin oxide (FTO)/glass substrates by using electrochemical deposition method respectively. A proper weight ratio of PANi/GNP/MWCNT (1/0.0030/0.0045) composite film depositing on FTO substrate as counter electrode with sheet resistance of 8.25±0.13 Ω/sq for DSSCs yielded power conversion efficiency (PCE) up to 7.45±0.08%, which has potential to replace the conventional Pt cell (7.62±0.07%). In addition, we also fabricated the DSSCs composed of a proper weight ratio of PANi/GNP/MWCNTs (1/0.0045/0.0060) composite film depositing on glass substrate as counter electrode. The sheet resistance of resulting composite film was 59.34±12.34 Ω/sq. These solar cells with FTO-free counter electrode exhibited a PCE of 2.90±0.09%.

Modelling and Validation of Transmittance from Nanocrystalline Titania film for Photoanodic Action in Dye-Sensitized Solar Cells

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Divya Jyoti
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Incident Light ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Dip Coating ◽  
Optical Simulation ◽  
Nanocrystalline Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

AbstractA four phase model air/glass/indium doped tin oxide/TiO2 has been studied by modifying Rouard’s model to calculate the final transmittance from TiO2 layer to be used as photoanode in dye-sensitized solar cells. An optical simulation for the reflectance and transmittance has been executed for the constructed nanocrystalline TiO2 films. To validate the theoretical results TiO2 film has been deposited onto indium doped tin oxide (ITO) layer by sol-gel dip coating technique. It has been found that the incident light suffers losses by 5-15% on passage through TiO2 coated ITO layer. Experimentally it has been observed on the basis of efficiency value that meso-nano combination is the best candidate to be used as photoanode in a dye-sensitize solar cell.

scholarly journals Comparative Study of Characteristics of Dye Sensitized Solar Cells Fabricated Using Substrates Coated with Fluorine Doped Tin Oxide and Titanium

2020 ◽  
Vol 15 (3) ◽  
pp. 216-221
Author(s):  
Arbin Maharjan
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Fill Factor ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Coated Glass ◽  
Cell Efficiency ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) have attracted many researchers because it has potential to supplement and compete with other solar cell technologies like Silicon (Si) and Cadmium Telluride (CdTe). The fabrication of DSSCs requires a photo electrode and a counter electrode of transparent and conducting nature. The commercial DSSCs uses electrodes of fluorine doped tin oxide (FTO) glass substrates. These electrodes are expensive and hence, possible alternative materials that are cheaper and that would provide better performance under similar environmental condition should be explored. In this paper, titanium (Ti)-coated glass substrates were prepared and then used to prepare electrodes for fabricating DSSCs. Similarly, DSSCs were fabricated using electrodes of conventional FTO-coated glass substrates. Performance characteristics like cell efficiency (η%), fill-factor (FF), short circuit current density (JSC) and open circuit voltage (VOC) of both fabricated DSSCs were obtained using their respective J-V characteristic curves under similar illumination of 100 mW/cm2 and with comparable transmittance under the visible transmission spectrum of 300-850 nm. The obtained results showed that DSSCs prepared using electrodes of FTO coated glass substrates have 1.557 times better cell efficiency and 2.172 times better fill factor than that of DSSCs fabricated using electrodes of Ti-coated glass substrates.

Alternative Materials and Processing Techniques for Optimized Nanostructures in Dye-Sensitized Solar Cells

2008 ◽  
Vol 8 (5) ◽  
pp. 2230-2248
Author(s):  
Judy N. Hart ◽  
Yi-Bing Cheng ◽  
George P. Simon ◽  
Leone Spiccia
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Conventional Heating ◽  
Selective Heating ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Alternative Materials ◽  
Careful Manipulation ◽  
Processing Techniques ◽  
Sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) represent an exciting application of nanotechnology and offer an appealing alternative to conventional solar cells based on photovoltaic devices, with significantly reduced production and material costs. However, further improvements are required to enhance the commercial viability of these solar cells. These improvements may be achieved through the careful manipulation of the structure at the nanoscale and the application of novel processing techniques, which may help to increase the efficiency of these solar cells, improve the ease of manufacture and allow the production of flexible, solid-state solar cells. For example, the use of a nanometre-thick coating of an insulating oxide over the semiconducting film in these solar cells may reduce recombination losses. Also, selective heating techniques such as microwave heating may assist in the production of efficient solar cells on polymer, rather than glass, substrates, by allowing a rapid heat treatment to be applied to the titanium dioxide film at a higher temperature than would be possible with conventional heating. Some novel approaches to the production of semiconducting thin films for dye-sensitized solar cells, as well as the use of alternative materials and nanostructures, are reviewed.

Tandem dye-sensitized solar cells with a back-contact bottom electrode without a transparent conductive oxide layer

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47735-47742 ◽  
Author(s):  
A. K. Baranwal ◽  
T. Shiki ◽  
Y. Ogomi ◽  
S. S. Pandey ◽  
T. Ma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bottom Electrode ◽  
Dye Sensitized Solar Cells ◽  
Transparent Conductive Oxide ◽  
Back Contact ◽  
Novel Device ◽  
Dye Sensitized ◽  
Device Architecture ◽  
Conductive Oxide ◽  
Sensitized Solar Cells

Tandem dye-sensitized solar cells using TCO-less back contact bottom electrode in a novel device architecture with an efficiency of 7.10% have been reported. Removal of costly TCO component have no adverse effect on the photon harvesting.

scholarly journals Dye-Sensitized Solar Cells Based onBi4Ti3O12

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Zeng Chen ◽  
Shengjun Li ◽  
Weifeng Zhang
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
X Ray Diffraction ◽  
Photovoltaic Properties ◽  
X Ray ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Response Range ◽  
Sensitized Solar Cells

Bismuth titanate (Bi4Ti3O12) particles were synthesized by hydrothermal treatment and nanoporous thin films were prepared on conducting glass substrates. The structures and morphologies of the samples were examined with X-ray diffraction and scanning electron microscope (SEM). Significant absorbance spectra emerged in visible region which indicated the efficient sensitization of Bi4Ti3O12with N3 dye. Surface photovoltaic properties of the samples were investigated by surface photovoltage. The results further indicate that N3 can extend the photovoltaic response range of Bi4Ti3O12nanoparticles to the visible region, which shows potential application in dye-sensitized solar cell. As a working electrode in dye-sensitized solar cells (DSSCs), the overall efficiency reached 0.48% after TiO2modification.

scholarly journals Transparent Platinum Counter Electrode Prepared by Polyol Reduction for Bifacial, Dye-Sensitized Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 502 ◽  
Author(s):  
Alvien Ghifari ◽  
Dang Xuan Long ◽  
Seonhyoung Kim ◽  
Brian Ma ◽  
Jongin Hong
Keyword(s):  
Solar Cells ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Thermal Reduction ◽  
Efficiency Ratio ◽  
High Power Conversion Efficiency ◽  
Glass Substrates ◽  
Dye Sensitized ◽  
Catalytic Nanoparticles ◽  
Sensitized Solar Cells

Pt catalytic nanoparticles on F-doped SnO2/glass substrates were prepared by polyol reduction below 200 °C. The polyol reduction resulted in better transparency of the counter electrode and high power-conversion efficiency (PCE) of the resultant dye-sensitized solar cells (DSSCs) compared to conventional thermal reduction. The PCEs of the DSSCs with 5 μm-thick TiO2 photoanodes were 6.55% and 5.01% under front and back illumination conditions, respectively. The back/front efficiency ratio is very promising for efficient bifacial DSSCs.

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