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- Title
Rapidly Forming the Chemical Bond Titania–Carbon in Hybrid Composite TiO<sub>2</sub>/Reduced Graphene Oxide to Enhance the Efficiency of Dye-Sensitized Solar Cells.
- Authors
Van Le, Cuong; Nguyen, My Thi Tra; Le, Nghia Tran Trung; Le, Hung Khac; Bui, Tri Minh; Ho, Dat Huu; Le, Viet Hai; Ho, Thi Thanh Nguyen; Pham, Trong Liem Chau; Huynh, Le Thanh Nguyen; Nguyen, Thai Hoang; Mai, Thanh Phong; Hoang, Nam Minh; Nguyen, Hieu Huu
- Abstract
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.
- Subjects
DYE-sensitized solar cells; SOLAR cell efficiency; CHEMICAL bonds; GRAPHENE oxide; HYBRID securities
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2022, Vol 47, Issue 1, p387
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-021-05462-5