Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 15, Issue 42, Pages 18716-18720Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp51941d
Keywords
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Funding
- National Natural Science Foundation of China [51172113]
- Research Fund for the Doctoral Program of Higher Education of China [20123719110001]
- China Postdoctoral Science Foundation Special Funded Project [2013T60652]
- China Postdoctoral Science Foundation [2012M521297]
- Shandong Natural Science Foundation for Distinguished Young Scholars [JQ201118]
- Taishan Scholar Overseas Distinguished Professorship program from the Shandong Province Government, PR China
- Shandong Postdoctoral Innovative Program [201203028]
- Qingdao Municipal Science and Technology Commission [12-1-4-136-hz]
- Missouri State University
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TiO2 has been extensively investigated due to its unique photoelectric properties. In this study, oriented single-crystal rutile TiO2 nanorod arrays were synthesized and then calcined at different temperatures in the atmosphere. The morphology and crystalline characterization indicated that the length of TiO2 nanorods increased rapidly and the nanorods became aggregated and fragile after calcination, yet the sintering treatment seemed to have almost no effect on the crystallinity. To obtain the all-solid-state, dye-sensitized solar cells (DSSCs), a newly reported solid inorganic semiconductor, CsSnI2.95F0.05, was employed as the electrolyte, and the Pt deposited on the conductive side of the fluorine-doped tin oxide (FTO) glass substrate was used as the counter-electrode. The effects of the calcination treatment on the photoelectric properties of the solar cells, including external quantum efficiency (EQE), open circuit voltage (V-OC), short-circuit current (J(SC)), and photoelectric conversion efficiency (eta), were investigated under the illumination of a solar simulator. As a result, all of the EQE, V-OC, J(SC), and eta values of the cells first increased and then declined with the increase of calcination temperatures, and the highest eta of 2.81% was obtained by the cell assembled with its TiO2 electrode sintered at 450 degrees C for 3 h, a value almost 2.5 times that of the non-sintered sample (1.1%).
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