2D layered insulator hexagonal boron nitride enabled surface passivation in dye sensitized solar cells

Nanoscale ◽  
2013 ◽  
Vol 5 (22) ◽  
pp. 11275 ◽  
Author(s):  
Mariyappan Shanmugam ◽  
Robin Jacobs-Gedrim ◽  
Chris Durcan ◽  
Bin Yu
Keyword(s):  
Solar Cells ◽  
Boron Nitride ◽  
Surface Passivation ◽  
Hexagonal Boron Nitride ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Investigation of Hexagonal Boron Nitride for Application as Counter Electrode in Dye-Sensitized Solar Cells

2012 ◽  
Vol 512-515 ◽  
pp. 242-245 ◽  
Author(s):  
Shun Jian Xu ◽  
Yu Feng Luo ◽  
Wei Zhong ◽  
Zong Hu Xiao ◽  
Xiao Yun Liu
Keyword(s):  
Crystal Structure ◽  
Solar Cells ◽  
Boron Nitride ◽  
Counter Electrode ◽  
Hexagonal Boron Nitride ◽  
Dye Sensitized Solar Cells ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Catalytic Material ◽  
Sensitized Solar Cells

Hexagonal boron nitride (HBN), which has the same crystal structure as graphite, has been used as catalytic material for a counter electrode in dye-sensitized solar cells (DSCs) to investigate its potential application. X-ray diffraction (XRD) has been used to confirm the crystal structure of HBN, scanning electron microscopy (SEM) has been used to characterize the morphology of HBN film on counter electrode, and electrochemical workstation has been employed to obtain the electrochemical impedance spectroscopy (EIS) and corresponding impedance parameters. Results show that the HBN film has rough surface and porous structure with pore size of less than 1 μm. When employed the HBN counter electrode to DSCs, the conversion efficiency (η) is only about a tenth of that of graphite based DSCs. Low efficiency of HBN based DSCs is induced by high charge transfer resistance (Rct) of HBN counter electrode, which means that HBN can hardly provide catalytic activity for the reduction of the triiodide ion. Therefore, the crystal structure is not a crucial factor to select the catalytic material for a counter electrode in DSCs. Moreover, the short circuit photocurrent density (Jsc) and the open circuit voltage (Voc) of device also evidently depend on the characteristics of catalytic material.

Characterization of Surface Passivation by Poly(methylsiloxane) for Dye-Sensitized Solar Cells Employing the Ferrocene Redox Couple

2010 ◽  
Vol 114 (23) ◽  
pp. 10551-10558 ◽  
Author(s):  
Sandra M. Feldt ◽  
Ute B. Cappel ◽  
Erik M. J. Johansson ◽  
Gerrit Boschloo ◽  
Anders Hagfeldt
Keyword(s):  
Solar Cells ◽  
Surface Passivation ◽  
Dye Sensitized Solar Cells ◽  
Redox Couple ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Surface passivation of titanium dioxide via an electropolymerization method to improve the performance of dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12537-12543 ◽  
Author(s):  
Mohammad Mazloum-Ardakani ◽  
Alireza Khoshroo ◽  
Nima Taghavinia ◽  
Laleh Hosseinzadeh
Keyword(s):  
Titanium Dioxide ◽  
Solar Cells ◽  
Recombination Rate ◽  
Electrochemical Method ◽  
Surface Passivation ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

We introduce an electrochemical method for insulating and passivation open areas of a nanoporous TiO2 in dye-sensitized solar cells, which can effectively decrease the recombination rate of electrons.

A viable surface passivation approach to improve efficiency in cobalt based dye sensitized solar cells

Polyhedron ◽  
2014 ◽  
Vol 82 ◽  
pp. 173-180 ◽  
Author(s):  
Stefano Carli ◽  
Laura Casarin ◽  
Stefano Caramori ◽  
Rita Boaretto ◽  
Eva Busatto ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Passivation ◽  
Dye Sensitized Solar Cells ◽  
Improve Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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