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首页> 外文会议>European photovoltaic solar energy conference >CURRENT FLOW MECHANISMS AND POTENTIAL EFFICIENCY OF SINGLE- AND MULTI-JUNCTION SOLAR CELLS
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CURRENT FLOW MECHANISMS AND POTENTIAL EFFICIENCY OF SINGLE- AND MULTI-JUNCTION SOLAR CELLS

机译：单结和多结太阳能电池的电流流动机理和潜能

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摘要

The resistanceless (not accounting for the p-n structure series resistance R_S) current-voltagecharacteristic defines the limiting efficiency of single- and multi-junction solar cells (SC). In the present work, suchcharacteristics have been obtained for single-junction (GaAs, GaSb) SCs and for dual-junction (GaInP/GaAs)monolithic SCs. For this, the following characteristics independent of R_S were used: open circuit voltage-illuminationintensity, electroluminescence intensity-forward current. An equation correlating in an explicit form the p-n junctionpotential efficiency and the photogenerated current has been deduced. This equation may be applied for a multijunctionSC, if one uses the concept of a resulting p-n junction simulating p-n junctions connected in series. Thediode coefficients of the resulting p-n junction are equal to the sum of the diode coefficients of p-n junctionsconnected in series, and the preexponential factors are their geometrical mean (at the equality of the diodecoefficients of the p-n junctions connected). The deduced equation was used for calculation of the potentialefficiency of the SCs investigated. It follows from the investigations carried out that, in calculating the SC efficiencyat concentrations of up to 100 suns, the recombination mechanism of current flow should be taken into account.
机译：无阻（不考虑p-n结构串联电阻R_S）的电流-电压 特性定义了单结和多结太阳能电池（SC）的极限效率。在目前的工作中，这样 单结（GaAs，GaSb）SC和双结（GaInP / GaAs）的特性已经获得 单片SC。为此，使用了独立于R_S的以下特性：开路电压照明 强度，电致发光强度前向电流。以显式形式关联p-n结的方程 势能和光生电流的推论。该方程式可用于多结 SC，如果使用了模拟串联的p-n结的结果p-n结的概念。这 所得p-n结的二极管系数等于p-n结的二极管系数之和 串联连接，并且指数前因数是它们的几何平均值（在二极管相等时） 连接的p-n结的系数）。推导的方程式用于计算电势 调查的SC的效率。从进行的调查中可以得出，在计算供应链效率时 在浓度高达100个太阳的情况下，应考虑电流的重组机制。

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