Improved photoanode structure based on anodic titania nanotube array covered by TiO2-NPs/nanographite composite layer for ETA-cells

3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures (Saint Petersburg OPEN 2016)

Gavrilin, I.M.^1 ; Dronov, A.A.^1 ; Shilyaeva, Yu I.^1 ; Lebedev, E.A.^1 ; Kuzmicheva, M.S.^1 ; Savchuk, T.P.^1 ; Gavrilov, S.A.^1

Department of Materials for Functional Electronics, National Research University of Electronic Technology, Zelenograd

124498, Russia^1

关键词: Absorbing layers;    Anodic titanium oxides;    Composite layer;    High conductivity;    Nanotube walls;    Properties optimizations;    Structure-based;    TiO2 nano-particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/741/1/012100/pdf
DOI  :  10.1088/1742-6596/741/1/012100

来源: IOP

【 摘 要 】

This work is devoted to the morphology and electrical properties optimization of flexible photoanodes based on anodic titanium oxide nanotubular arrays (TiO2-NTAs) for solar cells with extremely thin absorbing layer (ETA-cells) by TiO2-nanographite thin composite layer formation on the TiO2-NTAs surface. First, the carbon doped TiO2-NTAs were synthesized by annealing of the as-anodized TiO2-NTAs in argon without foreign carbonaceous precursor. The residual ethylene glycol absorbed on the nanotube wall during anodization serves as the carbon source and the C species are uniformly distributed along the entire nanotube to form the C-TiO2NTAs. Further decorating of C-TiO2-NTAs surface by TiO2nanoparticles to form the TiO2-nanographite (NG) composite layer with high conductivity and increased photoanode effective area showed improved ETA-cells performance.