Fu Min, Critchley Kevin
School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom.
Nanotechnology. 2024 May 10;35(30). doi: 10.1088/1361-6528/ad40b3.
Inkjet printing (IJP) has become a versatile, cost-effective technology for fabricating organic and hybrid electronic devices. Heavy-metal-based quantum dots (HM QDs) play a significant role in these inkjet-printed devices due to their excellent optoelectrical properties. Despite their utility, the intrinsic toxicity of HM QDs limits their applications in commercial products. To address this limitation, developing alternative HM-free quantum dots (HMF QDs) that have equivalent optoelectronic properties to HM QD is a promising approach to reduce toxicity and environmental impact. This article comprehensively reviews HMF QD-based devices fabricated using IJP methods. The discussion includes the basics of IJP technology, the formulation of printable HMF QD inks, and solutions to the coffee ring effect. Additionally, this review briefly explores the performance of typical state-of-the-art HMF QDs and cutting-edge characterization techniques for QD inks and printed QD films. The performance of printed devices based on HMF QDs is discussed and compared with those fabricated by other techniques. In the conclusion, the persisting challenges are identified, and perspectives on potential avenues for further progress in this rapidly developing research field are provided.
喷墨打印（IJP）已成为一种用于制造有机和混合电子器件的多功能、经济高效的技术。基于重金属的量子点（HM QDs）因其优异的光电特性，在这些喷墨打印器件中发挥着重要作用。尽管它们具有实用性，但HM QDs的内在毒性限制了它们在商业产品中的应用。为了解决这一限制，开发具有与HM QD相当的光电特性的替代性无重金属量子点（HMF QDs）是一种减少毒性和环境影响的有前景的方法。本文全面综述了使用IJP方法制造的基于HMF QD的器件。讨论内容包括IJP技术的基础知识、可打印HMF QD油墨的配方以及咖啡环效应的解决方案。此外，本综述简要探讨了典型的最先进HMF QDs的性能以及用于QD油墨和印刷QD薄膜的前沿表征技术。讨论了基于HMF QDs的印刷器件的性能，并与通过其他技术制造的器件进行了比较。在结论部分，确定了持续存在的挑战，并提供了关于在这个快速发展的研究领域进一步取得进展的潜在途径的观点。
