The viability of rumpled La₂CrFeW₆-CdSe perovskite wrapped by graphene for a viable efficiency and icreased utilization of dye-sensitized solar cells

ABSTRACT

We introduce the highly performance novel of Graphene as a transparent electrode wrapped La₂CrFeW₆ perovskite solar cells dropping by CdSe quantum dot (LCW@G-CS)for counter electrodes (CEs) of Dye-Sensitized Solar Cells (DSSCs). The device exhibits a high power conversion efficiency (PCE) of 17.03% under AM1.5 solar irradiation condition. These results demonstrate that the LCW@G-CShas high optical transmittance, flexible, stable and lightweight solar cells. Moreover, a significant efficiency enhancement of solar cells by utilizing CdSe quantum dots attached to reduced graphene oxide (rGO) as the electron accepting phase are also discussed. The improvement is mainly due to CdSe has the ideal band gap to match the solar spectrum, which enables it to absorb a wide range of light wavelengths. For this reason, this material is particularly suitable to be the alternative material to solve the energy problem in the future.

Graphical Abstract

KEYWORDS:

• Dye-sensitized solar cell
• rumpled
• perovskite material
• graphene
• quantum dot

Acknowledgments

The authors would like to express their appreciation to the National Research Foundation of Korea (NRF) for the award of a grant funded by the Ministry of Science and ICT of the Republic of Korea, in support of the authors’ work through the Nuclear Research and Development Program (NRF-2017M2A8A5015144). And, this work was supported by KICET with TEM analysis project.