Skip to main content

Research Repository

Advanced Search

Intriguing CeO2–TiO2 hybrid nanostructured photoanode resulting up to 46% efficiency enhancement for dye-sensitized solar cells

Roy, Anurag; Bhandari, Shubhranshu; Sundaram, Senthilarasu; Mallick, Tapas K.


Anurag Roy

Shubhranshu Bhandari

Tapas K. Mallick


The harvesting of electrical energy from sunrays with low cost, clean form and prosperity is an excellent progression. In this context, significant advancement has been made in the solar energy area in terms of cell's design to enhance efficiency. Light scattering may benefit solar cells in this aspect by extending the travelling distance of light within the photoelectrode film. In this work, dextran templating high-surface-area contained CeO2 nanoparticles (~22 nm) were employed to improve the power conversion efficiency (PCE) of a TiO2-based dye-sensitized solar cell (DSSCs). Various physicochemical techniques were investigated to characterize the synthesized CeO2 nanoparticles. Synthesized cubic CeO2 nanoparticles were further explored as an additional layer on the top of the synthesized anatase TiO2 nanocube based film to fabricate CeO2–TiO2 hybrid photoanode, encouraging light scattering in DSSCs. A comparative study was undertaken to understand the effect of the CeO2 layer on the synthesized and standard anatase TiO2. The overall power conversion efficiency obtained for hybrid photoanode-based DSSC is 8.92%, ~46% higher than that of TiO2 nanocubes-based photoanode, with a considerably improved open-circuit voltage of 0.83 V under 1 SUN AM 1.5 . In addition, the PCE enhancement is observed only ~8% using standard TiO2 based photoanode under the same condition. The photovoltaic performance highlights that dextran templating CeO2 nanoparticle exhibits a significant impact as the light scattering layer and heterojunction formation when incorporating on top of the anatase TiO2 nanocube resulting in a hybrid photoanode enhancing the PCE of DSSCs. This alternative approach could facilitate the performance of TiO2 based DSSCs towards improving efficiency.


Roy, A., Bhandari, S., Sundaram, S., & Mallick, T. K. (2021). Intriguing CeO2–TiO2 hybrid nanostructured photoanode resulting up to 46% efficiency enhancement for dye-sensitized solar cells. Materials Chemistry and Physics, 272, Article 125036.

Journal Article Type Article
Acceptance Date Jul 17, 2021
Online Publication Date Jul 18, 2021
Publication Date 2021-11
Deposit Date Mar 11, 2023
Journal Materials Chemistry and Physics
Print ISSN 0254-0584
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 272
Article Number 125036
Keywords CeO2, Light scattering, Optoelectronic materials, Photovoltaic, Heterojunction