Polyethylenimine-Assisted Growth of High-Aspect-Ratio Nitrogen-Doped ZnO (NZO) Nanorod Arrays and Their Effect on Performance of Dye-Sensitized Solar Cells

2014 ◽  
Vol 6 (13) ◽  
pp. 10028-10043 ◽  
Author(s):  
Khalid Mahmood ◽  
Bhabani Sankar Swain ◽  
Gill-Sang Han ◽  
Byeong-Jo Kim ◽  
Hyun Suk Jung
2014 ◽  
Vol 2 (23) ◽  
pp. 8902-8909 ◽  
Author(s):  
Jianjian Lin ◽  
Andrew Nattestad ◽  
Hua Yu ◽  
Yang Bai ◽  
Lianzhou Wang ◽  
...  

Highly connected hierarchical textured TiO2spheres, composed of high aspect-ratio nanosheets, gave high conversion efficiency in dye-sensitized solar cells.


2011 ◽  
Vol 189-193 ◽  
pp. 3458-3461 ◽  
Author(s):  
Yi Mu Lee ◽  
Chun Hung Lai ◽  
Yuan Tsu Chen ◽  
Min Hua Cai ◽  
Shin Yi Liou ◽  
...  

A low-temperature controllable chemical bath deposition (CBD) method was demonstrated to prepare ZnO nanorod arrays. Our deposition technique includes the seeding and subsequent main CBD growth. The uniform growth ZnO nanorod arrays on the condensed ZnO seeding layer could be controlled by changing the processing parameters. Experiment results reveal that the ZnO nanorod arrays prepared under 0.03-0.05 M concentration with reaction temperature of 95 °C demonstrate the well-aligned orientation and optimum optical properties with high aspect ratio of ~21. The n-ZnO/p-NiO heterojunction electrode shows excellent rectifying behavior with extremely low leakage current. After the sensitization with N719, it is found that the degree of orientation and aspect ratio value play critical roles in the photovoltaic properties of solid-state dye-sensitized solar cells (SS-DSSCs).


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