A compact equivalent circuit for the dark current-voltage characteristics of nonideal solar cells
A compact equivalent circuit for the dark current-voltage characteristics of nonideal solar cells
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DOI：
10.1063/1.2357641
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发表时间：
2006-10
影响因子：
3.2
通讯作者：
J. Pallarès;R. Cabré;L. Marsal;R. Schropp
中科院分区：
文献类型：
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作者：
J. Pallarès;R. Cabré;L. Marsal;R. Schropp
本文提出了一个紧凑的等效电路，描述了非理想pn结太阳能电池在宽温度范围内的暗电流-电压特性。该模型清楚地分离了结区和块区电压降。它是基于两个指数机制，并联和串联电阻和空间电荷限制电流的组合。为了提高参数提取过程的精度，同时拟合ln（I-V）及其导数图。根据所提取参数的温度依赖性，可以在不假设主导项的情况下获得控制I-V特性的传导机制。此外，所提取的参数还可以与通过诸如电容-电压测量（扩散电位）和照明电流-电压特性（串联电阻和开路电压）等独立测量获得的其他电量值相关。为了举例说明应用程序，p+ a- sic：…
This paper presents a compact electrical equivalent circuit which describes the dark current-voltage characteristics of nonideal p-n junction solar cells in a wide range of temperatures. The model clearly separates the voltage drop in the junction and bulk regions. It is based on the combination of two exponential mechanisms, shunt and series resistances and space-charge limited current. In order to increase the accuracy of the parameter extraction process, both ln(I-V) and its derivative plots are fitted simultaneously. From the temperature dependence of the extracted parameters, the conduction mechanisms governing the I-V characteristics can be obtained without assuming dominating terms. In addition, the extracted parameters can be related to other electrical magnitudes obtained from such independent measurements as capacitance-voltage measurements (diffusion potential) and illuminated current-voltage characteristics (series resistance and open-circuit voltage). To exemplify the application, a p+ a-SiC:...