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

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Recent Patents on Nanotechnology Pub Date : 2023-09-15 DOI:10.2174/1872210518666230915142211

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

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引用次数: 0

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.

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La0.67(Ca,Ba)0.33MnO3对电极染料敏化太阳能电池光电性能的磁场调制效应

背景:近年来，许多具有独特能带结构的半导体材料被用来作为染料敏化太阳能电池(DSSCs)的Pt对电极(CE)替代品，这使得DSSCs的光电性能可以被电场、磁场和光场调制。本文采用La0.67(Ca Ba)0.33MnO3 (LCBMO)薄膜作为DSSCs中的CE。方法:实验结果表明，在外加磁场作用下，DSSCs的短路电流密度和光电转换效率具有较好的稳定性。此外，外加磁场可以显著提高交换电流密度(J0)和极限扩散电流密度(Jlim)。当施加0.25 t的磁场时，J0从-0.51 mA•cm-2增加到-0.65 mA•cm-2, Jlim从0.2 mA•cm-2增加到0.3 mA•cm-2。结果:阻抗测试的拟合结果验证了磁场降低了Rct的值。结论:磁场增强催化活性和CMR效应共同促进了光电流的增加，最终提高了DSSCs的光伏效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Recent Patents on Nanotechnology NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

4.70

自引率

10.00%

发文量

审稿时长

3 months

期刊介绍： Recent Patents on Nanotechnology publishes full-length/mini reviews and research articles that reflect or deal with studies in relation to a patent, application of reported patents in a study, discussion of comparison of results regarding application of a given patent, etc., and also guest edited thematic issues on recent patents in the field of nanotechnology. A selection of important and recent patents on nanotechnology is also included in the journal. The journal is essential reading for all researchers involved in nanotechnology.