Rapidly Forming the Chemical Bond Titania–Carbon in Hybrid Composite TiO2/Reduced Graphene Oxide to Enhance the Efficiency of Dye-Sensitized Solar Cells.

Autor: 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
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Zdroj: Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ); Jan2022, Vol. 47 Issue 1, p387-395, 9p
Abstrakt: 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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