Magnetic field modulation effect of photoelectric properties in dye-sensitized solar cells with La0.67(Ca,Ba)0.33MnO3 as counter electrodes

Guanzhong Huo; Wenqing Lin; Ke Wang; Zhe Pei; Xuan Du; Shuiyuan Chen; Chao Su; Qingying Ye; Guilin Chen

doi:10.2174/1872210518666230915142211

Magnetic field modulation effect of photoelectric properties in dye-sensitized solar cells with La0.67(Ca,Ba)0.33MnO3 as counter electrodes

Recent Pat Nanotechnol. 2023 Sep 15. doi: 10.2174/1872210518666230915142211. Online ahead of print.

Authors

Guanzhong Huo¹, Wenqing Lin^{1

2}, Ke Wang^{1

2}, Zhe Pei¹, Xuan Du¹, Shuiyuan Chen^{1

2}, Chao Su¹, Qingying Ye^{1

2}, Guilin Chen^{1

2}

Affiliations

¹ College of Physics and Energy, Fujian Normal University, Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, Fuzhou，350117, China.
² Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage, Fuzhou,350117, China.

PMID: 37718529
DOI: 10.2174/1872210518666230915142211

Abstract

Background: In recent years, many semiconductor materials with unique band structures have been used as Pt counter electrode (CE) substitutes for dye-sensitized solar cells (DSSCs), which makes the photoelectric properties of DSSCs possible to be modulated by electric field, magnetic field, and light field. In this work, La0.67(Ca Ba)0.33MnO3 (LCBMO) thin film is employed to act as CE in DSSCs.

Method: The experimental results indicate that short-circuit current density and photoelectric conversion efficiency present better stability when applying an external magnetic field to the DSSCs. Furthermore, both the exchange current density (J0) and limit diffusion current density (Jlim) are largely enhanced by an external magnetic field. J0 increases from -0.51 mA•cm-2 to -0.65 mA•cm-2, and Jlim increases from 0.2 mA•cm-2 to 0.3 mA•cm-2 when applying a magnetic field of 0.25 T.

Result: The fitting results of the impedance test verify that the magnetic field reduces the value of Rct.

Conclusion: Both magnetic-field enhancing catalytic activity and CMR effect jointly promote the increase of photocurrent and finally improve the photovoltaic effect in DSSCs.

Keywords: Catalytic activity; Colossal magnetoresistance effect; Counter electrodes; Dye-sensitized solar cell; Magnetic field modulation; Perovskite manganese oxide.