Recombination Dynamics as a Key Determinant of Open Circuit Voltage in Organic Bulk Heterojunction Solar Cells: A Comparison of Four Different Donor Polymers
Recombination Dynamics as a Key Determinant of Open Circuit Voltage in Organic Bulk Heterojunction Solar Cells: A Comparison of Four Different Donor Polymers
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DOI：
10.1002/adma.201002360
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发表时间：
2010-11-24
影响因子：
29.4
通讯作者：
Durrant, James R.
中科院分区：
文献类型：
--
作者：
Maurano, Andrea;Hamilton, Rick;Durrant, James R.
瞬态光电压和电荷提取分析分析的有机聚合物：富勒烯太阳能电池开路工作条件下，采用四种不同的供体聚合物的载流子密度和双分子复合动力学。一个方程，使我们能够从这些动力学测量计算的设备V-OC的推导。该公式允许我们计算直接测量值+/- 25 meV范围内的器件电压输出。因此，这种分析使我们能够将器件开路电压直接与双分子复合的动力学联系起来，从而研究纳米形态对器件电压输出的影响。
Transient photovoltage and charge extraction analyses are employed to analyze charge carrier densities and bimolecular recombination dynamics in organic polymer: fullerene solar cells under open circuit operating conditions, employing four different donor polymers. An equation that allows us to calculate the device V-OC from these kinetic measurements is derived. This equation allows us to calculate the voltage output of devices within +/- 25 meV of directly measured values. This analysis thus allows us to relate the device open circuit voltage directly to the kinetics of bimolecular recombination, and thereby the influence of nanomorphology upon device voltage output.