Rapidly Forming the Chemical Bond Titania–Carbon in Hybrid Composite TiO2/Reduced Graphene Oxide to Enhance the Efficiency of Dye-Sensitized Solar Cells
| Autor: | Hieu Huu Nguyen, Tri Minh Bui, Viet Hai Le, Cuong Van Le, Nam Minh Hoang, Hung Khac Le, Thanh Phong Mai, Dat Huu Ho, Le Thanh Nguyen Huynh, Trong Liem Chau Pham, My Thi Tra Nguyen, Thai Hoang Nguyen, Nghia Tran Trung Le, Thi Thanh Nguyen Ho |
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| Rok vydání: | 2021 |
| Předmět: |
Photocurrent
Multidisciplinary Materials science Graphene 010102 general mathematics Composite number Oxide Ascorbic acid 01 natural sciences law.invention symbols.namesake Dye-sensitized solar cell chemistry.chemical_compound X-ray photoelectron spectroscopy Chemical engineering chemistry law symbols 0101 mathematics Raman spectroscopy |
| Zdroj: | Arabian Journal for Science and Engineering. 47:387-395 |
| ISSN: | 2191-4281 2193-567X |
| DOI: | 10.1007/s13369-021-05462-5 |
| Popis: | Hybrid composite TiO2/reduced graphene oxide (TiO2/rGO) is considered as a potential photoanode for dye-sensitized solar cells (DSSC) due to their excellent charge transport. This work aimed to prepare the composite TiO2/rGO from TiO2 and GO via a facile reduction step by ascorbic acid and annealing step at 450 °C. Incorporation 1%wt rGO into TiO2 photoanode can boost the overall performance of DSSC with the photocurrent of 13.5 mA/cm2 and the efficiency of 6.1% which is 37% enhanced than the bare TiO2 photoanode. The XPS, Raman spectroscopy and FT–IR results revealed the formation of the chemical bonding titania–carbon in composites TiO2/rGO-1% by ex-situ preparation. The interfacial charge transfer through chemical bonds significantly improves the photoelectrons transport and suppresses the recombination of electron holes in TiO2 structure. |
| Databáze: | OpenAIRE |
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