Zinc diketonates as single source precursors for ZnO nanoparticles: microwave-assisted synthesis, electrophoretic deposition and field-effect transistor device properties
Zinc diketonates as single source precursors for ZnO nanoparticles: microwave-assisted synthesis, electrophoretic deposition and field-effect transistor device properties
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DOI：
10.1039/c6tc02489k
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发表时间：
2016-01-01
影响因子：
6.4
通讯作者：
Schneider, Joerg J.
中科院分区：
文献类型：
--
作者：
Hoffmann, Rudolf C.;Sanctis, Shawn;Schneider, Joerg J.
微波辅助分解的锌二酮在乙腈中导致稳定的分散的氧化锌纳米粒子。二酮基配体框架的变化允许控制初级微晶和软附聚物的尺寸，这允许在4-6 nm范围内合成纳米颗粒。制造的场效应晶体管的电荷载流子迁移率高达0.32 cm（2）V-1 s（-1），并且在空气中仅在250摄氏度下进行后退火后，I-on/off比接近10（6）。它们的上级性能归因于ZnO颗粒在半导体层中的致密堆积。在非质子溶剂中的分散体适用于ZnO层在ITO涂覆的玻璃电极上的阴极电泳沉积。均匀的ZnO涂层表现出干涉色，可以获得厚度为几百纳米。
The microwave-assisted decomposition of zinc diketonates in acetonitrile leads to stable dispersions of zinc oxide nanoparticles. The variation of the diketonato ligand framework permits controlling the size of primary crystallites and soft agglomerates, which allows the synthesis of nanoparticles in the range of 4-6 nm. Field-effect transistors are fabricated with charge carrier mobility as high as 0.32 cm(2) V-1 s(-1) and an I-on/off ratio of similar to 10(6) after post-annealing at only 250 degrees C in air. Their superior performance is attributed to the dense packing of the ZnO particles in the semiconducting layer. Dispersions in aprotic solvent are suitable for a cathodic electrophoretic deposition of ZnO layers on ITO coated glass electrodes. Uniform ZnO coatings exhibiting interference colours can be obtained with thicknesses of several hundred nanometers.