Transparent conducting oxide-free and Pt-free flexible dye-sensitized solar cells employing CuS-nanosheet networks as counter electrodes

2016 ◽  
Vol 4 (17) ◽  
pp. 6569-6576 ◽  
Author(s):  
Xiaojia Zhang ◽  
Wenxi Guo ◽  
Caofeng Pan

We present completely transparent conducting oxide (TCO)-free and platinum (Pt)-free flexible dye sensitized solar cells (DSSCs) with remarkable efficiency and superior mechanical flexibility, consisting of TiO2 nanotube arrays on Ti foil (TNARs/Ti) as the photoanode and newly designed free-standing copper sulphide nanosheet (CuS NS) networks as the counter electrode (CE).

2015 ◽  
Vol 3 (45) ◽  
pp. 23028-23034 ◽  
Author(s):  
Ranran Zhou ◽  
Wenxi Guo ◽  
Ruomeng Yu ◽  
Caofeng Pan

We present a highly flexible dye-sensitized solar cell composed of TiO2 nanotube arrays (TNARs) as the photoanode and a transparent Pt network electrode as the counter electrode (CE).


2018 ◽  
Vol 166 (5) ◽  
pp. H3065-H3073 ◽  
Author(s):  
Mahyar Mohammadnezhad ◽  
Gurpreet Singh Selopal ◽  
Nasser Alsayyari ◽  
Rusoma Akilimali ◽  
Fabiola Navarro-Pardo ◽  
...  

Author(s):  
Robert A. Sayer ◽  
Stephen L. Hodson ◽  
Timothy S. Fisher

Dye sensitized solar cells (DSSCs) offer many advantages in comparison to their Si-based counterparts, including lower cost of raw materials, faster manufacturing time, and the ability to be integrated with flexible substrates. Although many advances have been made in DSSC fabrication over recent years, their efficiency remains lower than commercially available Si photovoltaic cells. Here we report improved efficiency of TiO2/anthocyanin dye solar cell using aligned arrays of carbon nanotubes (CNTs) as a counter electrode. Dense vertically oriented CNT arrays are grown directly on the counter electrode using microwave plasma chemical vapor deposition and a tri-layer (Ti/Al/Fe) catalyst. The resulting arrays are 30 micrometers in height and have a number density of approximately five hundred million per square millimeter. By directly growing the CNTs on the counter electrode substrate, electrical interface conductance is enhanced. The performance of both as-grown and N-doped (using a nitrogen plasma) CNT arrays is reported. The fabricated DSSCs are tested under AM1.5 light. Increased short circuit current is observed in comparison to graphite and Pt counter electrodes. We attribute this improvement to the large surface area created by the 3D structure of the arrays in comparison to the planar geometry of the graphite and Pt electrodes as well as the excellent electrical properties of the CNTs.


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