Hybrid Heterojunction Nanorods for Nanoscale Controlled Morphology in Bulk Heterojunction Solar Cells
Hybrid Heterojunction Nanorods for Nanoscale Controlled Morphology in Bulk Heterojunction Solar Cells
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DOI：
10.1021/jp112369t
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发表时间：
2011-05
影响因子：
3.7
通讯作者：
J. Mawyin;I. Shupyk;Mingqing Wang;G. Poize;P. Atienzar;Thilini Ishwara;J. Durrant;J. Nelson;Daiki Kanehira;N. Yoshimoto;C. Martini;E. Shilova;Patrick Secondo;H. Brisset;F. Fages;J. Ackermann
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文献类型：
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作者：
J. Mawyin;I. Shupyk;Mingqing Wang;G. Poize;P. Atienzar;Thilini Ishwara;J. Durrant;J. Nelson;Daiki Kanehira;N. Yoshimoto;C. Martini;E. Shilova;Patrick Secondo;H. Brisset;F. Fages;J. Ackermann
在这项研究中，我们报告了使用混合异质结纳米棒作为光活性材料的体异质结太阳能电池。通过低带隙p型低聚物在ZnO纳米棒表面的自组装，得到了核壳结构的ZnO纳米棒。这产生高度可溶的供体-受体纳米结构，其特征在于具有2.1eV带隙的接枝p型半导体单层。将同轴纳米棒溶液处理成薄膜导致特别大的施主-受主界面的体异质结。重要的是，通过简单的处理，获得了小于有机半导体的典型激子扩散长度的施主畴，这使得有效的激子解离成为可能。相应的太阳能电池显示，该纳米棒层形成有效的互穿网络，导致在吸收最大值λmax = 498 nm处的外量子效率为20%。虽然这些混合体异质结的施主域是由单层构成的，瞬态吸收光谱。
In this study, we report bulk heterojunction solar cells using hybrid heterojunction nanorods as photoactive material. The core–shell nanorods are obtained via self-assembly of low band gap p-type oligomers onto ZnO nanorod surfaces. This produces highly soluble donor–acceptor nanostructures that feature a grafted p-type semiconducting monolayer with a band gap of 2.1 eV. The solution processing of the coaxial nanorods into thin films leads to bulk heterojunctions of particularly large donor–acceptor interfaces. Importantly by simple processing donor domains smaller than typical exciton diffusion length of organic semiconductors are obtained which guaranties efficient exciton dissociation. The corresponding solar cells reveal that the hydrid nanorod layers form efficient interpenetrated networks which lead to external quantum efficiency of 20% at the absorption maximum λmax = 498 nm. Although the donor domains of these hybrid bulk heterojunction are constituted by monolayers, transient absorption spectros...