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首页> 外文期刊>Organic Electronics >Active circuit model of low-frequency behavior in perovskite solar cells
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Active circuit model of low-frequency behavior in perovskite solar cells

机译：Perovskite太阳能电池低频行为的主动电路模型

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摘要

The low-frequency impedance hook in perovskite solar cells (PSC) is a feature that has been frequently associated with the behavior of passive circuits of inductors or negative capacitances. However, if the experimental impedance data do not transform according to the Kramers-Kronig (KK) relations, the system does not fulfill the conditions of linearity, stability, causality and finiteness necessary for validating the impedance measurements and fitting it using passive circuit elements. In this study, we found that the impedance hook in a standard PSC configuration is not compliant with the KK transforms, and as such the system is active and unstable. We propose a model for this low-frequency behavior based on the active gyrator element which consists of two cross-coupled voltage-controlled current sources and has the capability of turning a capacitance into its dual inductive impedance.
机译：钙钛矿太阳能电池（PSC）中的低频阻抗钩是经常与电感器或负电容的无源电路的行为相关的特征。然而，如果实验阻抗数据不根据Kramers-Kronig（KK）关系转换，则系统不符合线性，稳定性，因果关系和有限性的条件，以验证阻抗测量并使用被动电路元件拟合它。在本研究中，我们发现标准PSC配置中的阻抗钩不符合KK变换，因此该系统处于活动状态和不稳定状态。我们提出了一种基于由两个交叉耦合的电压控制电流源组成的用于该低频行为的模型，其具有两个交叉耦合的电压控制电流源，并且具有将电容转换为其双电感阻抗的能力。

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  • 来源
    《Organic Electronics》 |2020年第10期|105804.1-105804.5|共5页
  • 作者

    Di Zhang; Anis Allagui; Ahmed S. Elwakil; Zheng Yan; Haifei Lu;

  • 作者单位

    Deptof Sustainable and Renewable Energy Engineering University of Sharjah Sharjah United Arab Emirates Center for Advanced Materiak Research Research Institute of Sciences and Engineering University of Sharjah Sharjah United Arab Emirates;

    Deptof Sustainable and Renewable Energy Engineering University of Sharjah Sharjah United Arab Emirates Center for Advanced Materiak Research Research Institute of Sciences and Engineering University of Sharjah Sharjah United Arab Emirates;

    Dept of Electrical and Computer Engineering University of Sharjah Sharjah United Arab Emirates Deptof Electrical and Computer Engineering University of Calgary Calgary Canada Nanoelectronics Integrated Systems Center (N1SC) Nile University Cairo Egypt;

    School of Science Wuhan University of Technology Wuhan China;

    School of Science Wuhan University of Technology Wuhan China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Perovskite solar cells; Inductive loop; Kramers-kronig transform; Active element modeling; Impedance spectroscopy;

    机译：Perovskite太阳能电池;归纳循环;Kramers-Kronig变换;有源元素建模;阻抗光谱学;

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