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Low resistance dye-sensitized solar cells based on all-titanium substrates using wires and sheets |
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| Authors: | Hai Wang Yong Liu Hong Huang Minyi Zhong Hui Shen Yuanhao Wang Hongxing Yang |
| Institution: | a School of Physics and Engineering, Institute for Solar Energy Systems, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China b Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Department of Material and Chemical Engineering, Guilin University of Technology, Guilin 541004, China c Instrumental Analysis and Research Center, Sun Yat-sen University, Guangzhou 510275, China d Department of Building Service Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China |
| Abstract: | Low resistance dye-sensitized solar cells (DSSCs) based on all-titanium substrates were proposed in this paper. To minimize the internal resistance of DSSCs, the titanium wires and titanium sheets were used as the substrates of the photoanode and the counter electrode, respectively. Compared with the FTO substrate, titanium wires could absorb much diffused light by back reflection since the reflectivity in the titanium sheet was highly increased up to 53.12%. Furthermore, the transmittance of the front cover was increased by 13.2% using the super white glass instead of FTO substrate. The thickness of TiO2 thin film coated on titanium wire was optimized to achieve a high cell performance. The efficiency of 5.6% for the cell was obtained with a Jsc of 15.41 mA cm−2, Voc of 0.59 V, and FF of 0.62. The results showed that the titanium-based DSSCs had superiority for producing the large-scale DSSCs without metal grid line. |
| Keywords: | Dye-sensitized solar cell All-titanium substrate TiO2 thin films Sheet resistance Counter electrode |
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