Impacts of high-electroactive-surface-area buckypaper counter electrodes on the photovoltaic performance of dye-sensitized solar cells

2015 ◽  
Vol 48 (35) ◽  
pp. 355107 ◽  
Author(s):  
Cheng-En Cheng ◽  
Yu-Chang Lin ◽  
Shang-Yi Tsai ◽  
Zheng-Kun Lin ◽  
Ping-Chen Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Area ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Electroactive Surface Area

scholarly journals Photovoltaic Performance of Dye-Sensitized Solar Cells Containing ZnO Microrods

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1645 ◽  
Author(s):  
Seong Il Cho ◽  
Hye Kyeong Sung ◽  
Sang-Ju Lee ◽  
Wook Hyun Kim ◽  
Dae-Hwan Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Area ◽  
Electrochemical Impedance ◽  
Collection Efficiency ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Growth Time ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

At an elevated temperature of 90 °C, a chemical bath deposition using an aqueous solution of Zn(NO3)2·6H2O and (CH2)6N4 resulted in the formation of both nanoflowers and microrods of ZnO on F-doped SnO2 glass with a seed layer. The nanoflowers and microrods were sensitized with dyes for application to the photoelectrodes of dye-sensitized solar cells (DSSCs). By extending the growth time of ZnO, the formation of nanoflowers was reduced and the formation of microrods favored. As the growth time was increased from 4 to 6 and then to 8 h, the open circuit voltage (Voc) values of the DSSCs were increased, whilst the short circuit current (Jsc) values varied only slightly. Changes in the dye-loading amount, dark current, and electrochemical impedance were monitored and they revealed that the increase in Voc was found to be due to a retardation of the charge recombination between photoinjected electrons and I3− ions and resulted from a reduction in the surface area of ZnO microrods. A reduced surface area decreased the dye contents adsorbed on the ZnO microrods, and thereby decreased the light harvesting efficiency (LHE). An increase in the electron collection efficiency attributed to the suppressed charge recombination counteracted the decreased LHE, resulting in comparable Jsc values regardless of the growth time.

scholarly journals Low-Cost and Efficient Nickel Nitroprusside/Graphene Nanohybrid Electrocatalysts as Counter Electrodes for Dye-Sensitized Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6563
Author(s):  
Md. Mahbubur Rahman
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Solution Process ◽  
Charge Transfer Resistance ◽  
Counter Electrodes ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Novel nickel nitroprusside (NNP) nanoparticles with incorporated graphene nanoplatelets (NNP/GnP) were used for the first time as a low-cost and effective counter electrode (CE) for dye-sensitized solar cells (DSSCs). NNP was synthesized at a low-temperature (25 °C) solution process with suitable purity and crystallinity with a size range from 5 to 10 nm, as confirmed by different spectroscopic and microscopic analyses. The incorporation of an optimized amount of GnP (0.2 wt%) into the NNP significantly improved the electrocatalytic behavior for the redox reaction of iodide (I-)/tri-iodide (I3-) by decreasing the charge-transfer resistance at the CE/electrolyte interface, lower than the NNP- and GnP-CEs, and comparable to the Pt-CE. The NNP/GnP nanohybrid CE when applied in DSSC exhibited a PCE of 6.13% (under one sun illumination conditions) with the Jsc, Voc, and FF of 14.22 mA/cm2, 0.628 V, and 68.68%, respectively, while the PCE of the reference Pt-CE-based DSSC was 6.37% (Jsc = 14.47 mA/cm2, Voc = 0.635 V, and FF = 69.20%). The low cost of the NNP/GnP hybrid CE with comparable photovoltaic performance to Pt-CE can be potentially exploited as a suitable replacement of Pt-CE in DSSCs.

Optimizing graphene content in a NiSe/graphene nanohybrid counter electrode to enhance the photovoltaic performance of dye-sensitized solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17579-17589 ◽  
Author(s):  
Vignesh Murugadoss ◽  
Jing Lin ◽  
Hu Liu ◽  
Xianmin Mai ◽  
Tao Ding ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Counter Electrode ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Mass Ratio ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Graphene Content ◽  
Sensitized Solar Cells

Optimizing the graphene mass ratio in NiSe/GN counter electrodes enabled the fabrication of high performance dye-sensitized solar cells with excellent electrocatalytic activity and chemical stability.

Facile synthesis of Bi2S3–C composite microspheres as low-cost counter electrodes for dye-sensitized solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (101) ◽  
pp. 57412-57418 ◽  
Author(s):  
Xue-Qin Zuo ◽  
Xiao Yang ◽  
Lei Zhou ◽  
Bo Yang ◽  
Guang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Synergistic Effect ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Facile Synthesis ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Composite Microspheres ◽  
Sensitized Solar Cells

The synergistic effect of the combination of conductive carbon and Bi2S3 can significantly improve the photovoltaic performance of DSSCs.

Porous carbon layers for counter electrodes in dye-sensitized solar cells: Recent advances and a new screen-printing method

2011 ◽  
Vol 83 (11) ◽  
pp. 2089-2106 ◽  
Author(s):  
Seigo Ito ◽  
Yuuki Mikami
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Carbon Layer ◽  
Counter Electrodes ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Catalyst Layers ◽  
Sensitized Solar Cells ◽  
Screen Printed

We review the recent literature on carbon catalyst layers for dye-sensitized solar cells (DSCs), and then report an improved fabrication method for screen-printed carbon counter electrodes. The carbon-printing ink was prepared by mixing carbon black, TiO2 nanoparticles, α-terpineol, and ethyl cellulose using a mortar, an ultrasonic homogenizer, and a rotary evaporator. Scanning electron microscopy (SEM) showed that the resulting screen-printed carbon layers were flatter and smoother at nano- and micro-scales than a carbon layer prepared using water-based ink. The photovoltaic performance of the screen-printed catalyst layers was similar to the photoenergy conversion of platinum counter electrodes. The highest cell efficiency with a carbon counter electrode was 7.11 % at a light intensity of 100 mW cm-2.

Sign in / Sign up

Export Citation Format

Share Document