Department of Chemistry, Brook Hill, The University of Sheffield, Dainton Building, Sheffield S3 7HF, U.K.
Department of Physics and Astronomy, The University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, U.K.
Langmuir. 2023 Apr 4;39(13):4799-4808. doi: 10.1021/acs.langmuir.3c00152. Epub 2023 Mar 20.
Controlling the dispersibility of nanocrystalline inorganic quantum dots (QDs) within organic semiconductor (OSC):QD nanocomposite films is critical for a wide range of optoelectronic devices. This work demonstrates how small changes to the OSC host molecule can have a dramatic detrimental effect on QD dispersibility within the host organic semiconductor matrix as quantified by grazing incidence X-ray scattering. It is commonplace to modify QD surface chemistry to enhance QD dispersibility within an OSC host. Here, an alternative route toward optimizing QD dispersibilities is demonstrated, which dramatically improves QD dispersibilities through blending two different OSCs to form a fully mixed OSC matrix phase.
控制纳米晶无机量子点（QD）在有机半导体（OSC）中的分散性：QD 纳米复合材料薄膜对于各种光电设备至关重要。这项工作表明，OSC 主体分子的微小变化会对主体有机半导体基质中 QD 的分散性产生巨大的不利影响，这可以通过掠入射 X 射线散射来定量。为了提高 QD 在 OSC 主体中的分散性，通常会对 QD 表面化学进行修饰。在这里，展示了一种优化 QD 分散性的替代途径，通过将两种不同的 OSC 混合形成完全混合的 OSC 基质相，显著提高了 QD 的分散性。
