Charge transfer in photovoltaics consisting of interpenetrating networks of conjugated polymer and TiO2 nanoparticles
Charge transfer in photovoltaics consisting of interpenetrating networks of conjugated polymer and TiO2 nanoparticles
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DOI：
10.1063/1.123659
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发表时间：
1999-03-22
影响因子：
4
通讯作者：
Brock, PJ
中科院分区：
文献类型：
--
作者：
Arango, AC;Carter, SA;Brock, PJ
我们研究了混合和层状二氧化钛纳米粒子对共轭聚合物光伏电池中电荷转移过程的影响。与阴极功函数无关，观察到层状结构与混合结构的光导率和锐饱和度增加了两个数量级。使用具有相似功函数的电极，我们观察到当TiO2纳米颗粒层自组装到氧化铟锡电极上时，其暗电流低，开路电压为0.7 V。我们对层状形貌的研究结果与TiO2界面上激子扩散和解离的电荷收集一致。(C) 1999年美国物理研究所。[s0003 - 6951(99) 00212 - 0]。
We study the effect of blended and layered titanium dioxide (TiO2) nanoparticles on charge transfer processes in conjugated polymer photovoltaics. A two order of magnitude increase in photoconductivity and sharp saturation is observed for layered versus blended structures, independent of the cathode work function. Using electrodes with similar work functions, we observe low dark currents and open circuit voltages of 0.7 V when a TiO2 nanoparticle layer is self-assembled onto the indium-tin-oxide electrode. Our results for the layered morphologies are consistent with charge collection by exciton diffusion and dissociation at the TiO2 interface. (C) 1999 American Institute of Physics. [S0003-6951(99)00212-0].