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首页> 外文期刊>Nanotechnology >The effect of donor layer thickness on the power conversion efficiency of organic photovoltaic devices fabricated with a double small-molecular layer
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The effect of donor layer thickness on the power conversion efficiency of organic photovoltaic devices fabricated with a double small-molecular layer

机译：施主层厚度对用双小分子层制造的有机光伏器件的功率转换效率的影响

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摘要

In organic photovoltaic (OPV) devices fabricated with a double small-molecular layer, the power conversion efficiency strongly depends on the thickness of the organic donor layer (here, copper phthalocyanine). In other words, the power conversion efficiency increases with the donor layer thickness up to a specific thickness (__12.7 nm) and then decreases beyond that thickness. This trend is associated with the light absorption and carrier transport resistance of the small-molecular donor layer, both of which strongly depend on the layer thickness. Experimental and calculated results showed that the short-circuit current due to light absorption increased with the donor layer thickness, while that due to current through the donor layer decreased with 1/R. Since the total short-circuit current is the product of the light absorption current and current through the donor layer, there is a trade-off, and the maximum power conversion efficiency occurs at a specific organic donor layer thickness (e.g.__12.7 nm in this experiment).
机译：在用双小分子层制造的有机光伏（OPV）装置中，功率转换效率强烈地取决于有机供体层（此处为酞菁铜）的厚度。换句话说，功率转换效率随着施主层厚度的增加而增加，直至达到特定厚度（__12.7 nm），然后降低至超过该厚度。这种趋势与小分子供体层的光吸收和载流子传输阻力有关，这两者都强烈取决于层的厚度。实验和计算结果表明，由于光吸收引起的短路电流随施主层厚度的增加而增加，而归因于流经施主层的电流的短路电流则以1 / R减小。由于总短路电流是光吸收电流与流经施主层的电流的乘积，因此需要权衡取舍，并且最大功率转换效率出现在特定的有机施主层厚度（例如__12.7 nm）中。这个实验）。

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