Great improvement of catalytic activity of oxide counter electrodes fabricated in N2 atmosphere for dye-sensitized solar cells
39
Citation
21
Reference
10
Related Paper
Citation Trend
Abstract:
The dye-sensitized solar cells (DSCs) using SnO2 and Nb2O5 counter electrodes (CEs) prepared in N2 atmosphere yielded power conversion efficiencies (PCE) of 6.09% and 4.65%, much higher than the PCE values (1.84%, 0.97%) of the DSCs using the same SnO2 and Nb2O5 CEs prepared in air.Keywords:
Auxiliary electrode
Triiodide
Auxiliary electrode
Cite
Citations (35)
3D graphene, which was synthesized directly from CO2 via its exothermic reaction with liquid K, exhibited excellent performance as a counter electrode for a dye-sensitized solar cell (DSSC). The DSSC has achieved a high power conversion efficiency of 8.25%, which is 10 times larger than that (0.74%) of a DSSC with a counter electrode of the regular graphene synthesized via chemical exfoliation of graphite. The efficiency is even higher than that (7.73%) of a dye-sensitized solar cell with an expensive standard Pt counter electrode. This work provides a novel approach to utilize a greenhouse gas for DSSCs.
Auxiliary electrode
Exfoliation joint
Cite
Citations (12)
Multi-walled carbon nanotubes (MWCNTs) with different morphologies were introduced into dyesensitized solar cell (DSSC) as low-cost substitutes for Pt counter electrode (CE). The effect of length and orientation of MWCNTs on the power conversion efficiency (PCE) of DSSC with MWCNTs CE were studied by measuring electrochemical impedance spectroscopy of MWCNTs and the photocurrent density–voltage (J–V ) characteristics of DSSC in this study. Results revealed that the long MWCNTs showed better electrocatalytic activity of reducing triiodide ions than short MWCNTs and yielded the power conversion efficiency of 2.42%. When the aligned multi-walled carbon nanotubes (AMWCNTs) with the same length as the long MWCNTs were used to prepare the CE, the power conversion efficiency of the DSSC reaches 2.95%. In order to further improve the performance of the DSSC, the processing of photoanode and counter electrode were adjusted. The power conversion efficiency of the cell with AMWCNTs as CE prepared by adjusted processing achieved 3.95% and the short circuit current density is superior to the DSSC with Pt as CEs, and it indicated the adjusted processing is beneficial to increase the overall performance of the dye-sensitized solar cell.
Auxiliary electrode
Triiodide
Photocurrent
Cite
Citations (6)
Auxiliary electrode
Cite
Citations (31)
A novel dye-sensitized solar cell (DSSC) structure using vertically aligned single-walled carbon nanotubes (VASWCNTs) as the counter electrode has been developed. In this design, the VASWCNTs serve as a stable high surface area and highly active electrocatalytic counter-electrode that could be a promising alternative to the conventional Pt analogue. Utilizing a scalable dry transfer approach to form a VASWCNTs conductive electrode, the DSSCs with various lengths of VASWCNTs were studied. VASWCNTs-DSSC with 34 μm original length was found to be the optimal choice in the present study. The highest conversion efficiencies of VASWCNTs-DSSC achieved 5.5%, which rivals that of the reference Pt DSSC. From the electrochemical impedance spectroscopy analysis, it shows that the new DSSC offers lower interface resistance between the electrolyte and the counter electrode. This reproducible work emphasizes the promise of VASWCNTs as efficient and stable counter electrode materials in DSSC device design, especially taking into account the low-cost merit of this promising material.
Auxiliary electrode
Cite
Citations (89)
Auxiliary electrode
Tin oxide
Glass electrode
Cite
Citations (23)
TiS2 nanotubular structures were synthesized by a high temperature H2S treatment of anodized TiO2 nanotube layers, and their electrochemical activity for a use as counter electrodes in dye sensitized solar cells (DSSCs) was evaluated. During conversion to TiS2 compositional, morphological and structural transformations were monitored. The fully converted TiS2 nanostructures show a high electrocatalytic activity for the I−/I3− oxidation comparable to a nanoparticular platinum layer. For a simplified model a DSSC solar cell efficiency of 6.1% was obtained using the TiS2 nanotube layer as counter electrode, which is very close to values obtained for a Pt reference (6.2%).
Auxiliary electrode
Anodizing
Cite
Citations (17)
Auxiliary electrode
Cite
Citations (67)
The study of CNT made of coconut shell for counter electrode dye-sensitized solar cells (DSSC) has succsefully been done. DSSC was formed structurally by two electrode sandwiching electrolit. The working electrode made from TiO2 paste and sensitized with curcumin for 24 hours and then fabricated in conductive glass with doctor blade method. The counter electrode is an important part of DSSC, the function is for accelerated redocs reaction for. The working electrode is TiO2 soaked in curcumin dye for 24 hours. The counter electrode is CNT made by CVD method with 2, 4, 6 hour time varation. CNT was coated in conductive glass by electrophoretic deposition method with 15 V of voltage. The working cells have an area 2.25 cm2. The voltage measured by voltmeter showed the V open circuit is 220 mV with 1000 lux intensity in 4 hour time varation.
Auxiliary electrode
Cite
Citations (0)