Effects of an Intercalation Nanocomposite at the Photoanode/Electrolyte Interface in Quasi-Solid Dye-Sensitized Solar Cells

2011 ◽  
Vol 115 (36) ◽  
pp. 17986-17992 ◽  
Author(s):  
Rui Gao ◽  
Liduo Wang ◽  
Yi Geng ◽  
Beibei Ma ◽  
Yifeng Zhu ◽  
...  

RSC Advances ◽  
2019 ◽  
Vol 9 (69) ◽  
pp. 40292-40300
Author(s):  
Anantharaj Gopalraman ◽  
Subbian Karuppuchamy ◽  
Saranyan Vijayaraghavan

VOC–JSC trade off is eliminated. Newly created surface states by OA in TiO2 facilitated the charge transfer kinetics.



2013 ◽  
Vol 29 (09) ◽  
pp. 1851-1864 ◽  
Author(s):  
LI Jing-Zhe ◽  
◽  
KONG Fan-Tai ◽  
WU Guo-Hua ◽  
HUANG Yang ◽  
...  


2016 ◽  
Vol 5 (2) ◽  
pp. 300-311 ◽  
Author(s):  
Simone Galliano ◽  
Federico Bella ◽  
Claudio Gerbaldi ◽  
Marisa Falco ◽  
Guido Viscardi ◽  
...  


2011 ◽  
Vol 56 (9) ◽  
pp. 3395-3400 ◽  
Author(s):  
Yingtong Tang ◽  
Xu Pan ◽  
Changneng Zhang ◽  
Linhua Hu ◽  
Fantai Kong ◽  
...  


2018 ◽  
Vol 1 (11) ◽  
pp. 6388-6400 ◽  
Author(s):  
Oliver Langmar ◽  
Carolina R. Ganivet ◽  
Tobias Scharl ◽  
Gema de la Torre ◽  
Tomás Torres ◽  
...  


Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 296 ◽  
Author(s):  
Nikolai Tsvetkov ◽  
Liudmila Larina ◽  
Jeung Ku Kang ◽  
Oleg Shevaleevskiy

The performance of dye-sensitized solar cells (DSCs) critically depends on the efficiency of electron transport within the TiO2-dye-electrolyte interface. To improve the efficiency of the electron transfer the conventional structure of the working electrode (WE) based on TiO2 nanoparticles (NPs) was replaced with TiO2 nanotubes (NTs). Sol-gel method was used to prepare undoped and Nb-doped TiO2 NPs and TiO2 NTs. The crystallinity and morphology of the WEs were characterized using XRD, SEM and TEM techniques. XPS and PL measurements revealed a higher concentration of oxygen-related defects at the surface of NPs-based electrodes compared to that based on NTs. Replacement of the conventional NPs-based TiO2 WE with alternative led to a 15% increase in power conversion efficiency (PCE) of the DSCs. The effect is attributed to the more efficient transfer of charge carriers in the NTs-based electrodes due to lower defect concentration. The suggestion was confirmed experimentally by electrical impedance spectroscopy measurements when we observed the higher recombination resistance at the TiO2 NTs-electrolyte interface compared to that at the TiO2 NPs-electrolyte interface. Moreover, Nb-doping of the TiO2 structures yields an additional 14% PCE increase. The application of Nb-doped TiO2 NTs as photo-electrode enables the fabrication of a DSC with an efficiency of 8.1%, which is 35% higher than that of a cell using a TiO2 NPs. Finally, NTs-based DSCs have demonstrated a 65% increase in the PCE value, when light intensity was decreased from 1000 to 10 W/m2 making such kind device be promising alternative indoor PV applications when the intensity of incident light is low.



2012 ◽  
Vol 116 (37) ◽  
pp. 19807-19813 ◽  
Author(s):  
Changneng Zhang ◽  
Yang Huang ◽  
Shuanghong Chen ◽  
Huajun Tian ◽  
Li’e Mo ◽  
...  


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