3D Printed Quantum Dot Light-Emitting Diodes
3D Printed Quantum Dot Light-Emitting Diodes
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DOI：
10.1021/nl5033292
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发表时间：
2014-12-01
期刊：
影响因子：
10.8
通讯作者：
McAlpine, Michael C.
中科院分区：
文献类型：
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作者：
Kong, Yong Lin;Tamargo, Ian A.;McAlpine, Michael C.
开发3D打印具有不同特性的各种材料的能力可以在独特的功能，交织的架构中自由生成有源电子产品。实现不同材料与3D打印的无缝集成是一项重大挑战，除了确保所有材料与3D打印过程兼容外，还需要克服材料特性的差异。到目前为止，3D打印仅限于特定的塑料、无源导体和一些生物材料。在这里，我们展示了不同类别的材料可以3D打印并完全集成到具有活性特性的设备组件中。具体而言，我们展示了五种不同材料的无缝交织，包括（1）发射半导体无机纳米粒子，（2）弹性体基质，（3）有机聚合物作为电荷传输层，（4）固体和液体金属引线，以及（5）UV粘合剂透明基板层。作为展示这些材料集成功能的概念验证，我们3D打印了基于量子点的发光二极管（QD-LED），具有纯净和可调的颜色发射特性。通过进一步结合表面拓扑结构的3D扫描，我们展示了将设备保形打印到曲线表面上的能力，例如隐形眼镜。最后，我们展示了使用标准微制造技术不易访问的新型架构可以通过3D打印封装LED的2 X 2 X 2立方体来构建，其中立方体和电子器件的每个组件都是3D打印的。总的来说，这些结果表明，3D打印比迄今为止已经证明的更加通用，并且能够集成许多不同类别的材料。
Developing the ability to 3D print various classes of materials possessing distinct properties could enable the freeform generation of active electronics in unique functional, interwoven architectures. Achieving seamless integration of diverse materials with 3D printing is a significant challenge that requires overcoming discrepancies in material properties in addition to ensuring that all the materials are compatible with the 3D printing process. To date, 3D printing has been limited to specific plastics, passive conductors, and a few biological materials. Here, we show that diverse classes of materials can be 3D printed and fully integrated into device components with active properties. Specifically, we demonstrate the seamless interweaving of five different materials, including (1) emissive semiconducting inorganic nanoparticles, (2) an elastomeric matrix, (3) organic polymers as charge transport layers, (4) solid and liquid metal leads, and (5) a UV-adhesive transparent substrate layer. As a proof of concept for demonstrating the integrated functionality of these materials, we 3D printed quantum dot-based light-emitting diodes (QD-LEDs) that exhibit pure and tunable color emission properties. By further incorporating the 3D scanning of surface topologies, we demonstrate the ability to conformally print devices onto curvilinear surfaces, such as contact lenses. Finally, we show that novel architectures that are not easily accessed using standard microfabrication techniques can be constructed, by 3D printing a 2 X 2 X 2 cube of encapsulated LEDs, in which every component of the cube and electronics are 3D printed. Overall, these results suggest that 3D printing is more versatile than has been demonstrated to date and is capable of integrating many distinct classes of materials.