In situ infrared study of photo-generated electrons and adsorbed species on nitrogen-doped TiO2 in dye-sensitized solar cells

2018 ◽  
Vol 20 (29) ◽  
pp. 19572-19580 ◽  
Author(s):  
Jiawei Liu ◽  
Piyapong Winwarid ◽  
Thomas C. K. Yang ◽  
Steven S. C. Chuang

In situ FTIR results revealed that nitrogen-doping facilitated the electron transfer from the dye to the conduction band of TiO2, reducing the impedance in DSSCs.

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
D. A. Duarte ◽  
M. Massi ◽  
A. S. da Silva Sobrinho

In this paper, nitrogen-doped TiO2thin films were deposited by DC reactive sputtering at different doping levels for the development of dye-sensitized solar cells. The mechanism of film growth during the sputtering process and the effect of the nitrogen doping on the structural, optical, morphological, chemical, and electronic properties of the TiO2were investigated by numerical modeling and experimental methods. The influence of the nitrogen doping on the working principle of the prototypes was investigated by current-voltage relations measured under illuminated and dark conditions. The results indicate that, during the film deposition, the control of the oxidation processes of the nitride layers plays a fundamental role for an effective incorporation of substitutional nitrogen in the film structure and cells built with nitrogen-doped TiO2have higher short-circuit photocurrent in relation to that obtained with conventional DSSCs. On the other hand, DSSCs built with nondoped TiO2have higher open-circuit voltage. These experimental observations indicate that the incorporation of nitrogen in the TiO2lattice increases simultaneously the processes of generation and destruction of electric current.


Solar Energy ◽  
2021 ◽  
Vol 218 ◽  
pp. 117-128
Author(s):  
Abdelaal S.A. Ahmed ◽  
Wanchun Xiang ◽  
Fang Shui ◽  
Bin Li ◽  
Hassan H.A. Younes ◽  
...  

2016 ◽  
Vol 7 (8) ◽  
pp. 1602276 ◽  
Author(s):  
Aabhash Shrestha ◽  
Munkhbayar Batmunkh ◽  
Cameron J. Shearer ◽  
Yanting Yin ◽  
Gunther G. Andersson ◽  
...  

2014 ◽  
Vol 43 (4) ◽  
pp. 1493-1497 ◽  
Author(s):  
Chun-Chen Yuan ◽  
Shi-Ming Wang ◽  
Wei-Lin Chen ◽  
Lin Liu ◽  
Chao Qin ◽  
...  

2012 ◽  
Vol 155 ◽  
pp. 165-176 ◽  
Author(s):  
Seung-Hyun Anna Lee ◽  
Yixin Zhao ◽  
Emil A. Hernandez-Pagan ◽  
Landy Blasdel ◽  
W. Justin Youngblood ◽  
...  

2021 ◽  
Vol 6 (29) ◽  
pp. 7537-7541
Author(s):  
Xun Sun ◽  
Fengyan Xie ◽  
Zhen Peng ◽  
Xiantao Peng ◽  
Wangchao Chen ◽  
...  

2017 ◽  
Vol 53 (49) ◽  
pp. 6629-6632 ◽  
Author(s):  
Vediappan Sudhakar ◽  
Arulraj Arulkashmir ◽  
Kothandam Krishnamoorthy

A polymer–graphene blocking layer decreases back electron transfer and increases dye regeneration that improved the DSSC efficiency to 10.4%.


2014 ◽  
Vol 16 (39) ◽  
pp. 21820-21826 ◽  
Author(s):  
Long Song ◽  
Qiang Luo ◽  
Fei Zhao ◽  
Yang Li ◽  
Hong Lin ◽  
...  

Nitrogen-doped porous graphene foams as counter electrodes work effectively with both iodide-based and sulfide-based electrolytes in dye-sensitized solar cells.


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