Coupled Organic-Inorganic Nanostructures with Mixed Organic Linker Molecules.
Coupled Organic-Inorganic Nanostructures with Mixed Organic Linker Molecules.
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具有混合有机连接分子的耦合有机-无机纳米结构
DOI：
10.1021/acsami.1c08614
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发表时间：
2021
影响因子：
9.5
通讯作者：
Brütting
中科院分区：
文献类型：
--
作者：
Grassl;Ullrich;Mansour;Abdalbaqi;Scheele;Brütting
半导体无机硫化铅（PbS）纳米晶体（NC）和有机连接分子的电子性质取决于NC的尺寸以及所使用的配体。在这里，我们证明了弱结合配体可以成功地连接到PbS NC形成耦合的有机-无机纳米结构（COIN）通过与强结合伴侣混合。我们使用弱结合的β-四氨基邻苯二甲酸锌（Zn 4APc）与强结合的1，2-乙二硫醇（EDT）组合作为混合配体系统，并将其结构、电子和（光）电性质与两种单配体COIN进行比较。据发现，结合Zn 4APc的存在下，EDT的辅助下，导致改善的薄膜均匀性，较低的陷阱密度，并增强光电流的衍生设备。因此，配体的混合是实现具有改进性能的COIN的通用工具。
The electronic properties of semiconducting inorganic lead sulfide (PbS) nanocrystals (NCs) and organic linker molecules are dependent on the size of NCs as well as the used ligands. Here, we demonstrate that a weakly binding ligand can be successfully attached to PbS NCs to form a coupled organic–inorganic nanostructure (COIN) by mixing with a strong binding partner. We use the weakly binding zinc β-tetraaminophthalocyanine (Zn4APc) in combination with the strongly binding 1,2-ethanedithiol (EDT) as a mixed ligand system and compare its structural, electronic, and (photo-)electrical properties with both single-ligand COINs. It is found that binding of Zn4APc is assisted by the presence of EDT leading to improved film homogeneity, lower trap density, and enhanced photocurrent of the derived devices. Thus, the mixing of ligands is a versatile tool to achieve COINs with improved performance.