Dye-sensitized solar cells based on composite TiO$_2$ nanoparticle–nanorod single and bi-layer photoelectrodes

Bulletin of Materials Science

关键词: Dye-sensitized solar cells;    composites;    nanostructure;    photovoltaic.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

TiO$_2$ nanoparticle (NP), composite TiO$_2$ nanoparticle–nanorod (NP–NR) and bi-layer TiO2 nanoparticle/ nanorod (NP/NR) with the optimized diameter of NRs had been prepared as anode layer in dye-sensitized solarcells (DSSCs). Morphology and thickness of anode layers were provided by field emission scanning electron microscope (FE-SEM) and scanning electron microscopy (SEM) devices. Current density–voltage diagrams were preparedby potentiostat and solar simulator devices at air mass (AM) 1.5. It is determined that DSSCs based on composite NP–NR photoelectrode had the best conversion efficiency of 5.07%. Also, the results of the electrochemical modelling of these DSSCs indicated that solar cells based on NP–NR electrode had the highest electron transport time ($\tau_d$) of 312.87 ms, electrons’ recombination lifetime ($\tau_n$) of 130.4 ms and the lowest transfer resistance ($R_{ct}$) as wellas transport resistance ($R_t$) of 22.46 and 9.4 $\Omega$, respectively.

【 授权许可】

CC BY