Panzer Matthew J, Aidala Katherine E, Bulović Vladimir
Department of Chemical & Biological Engineering, Tufts University, Medford, MA, USA.
Nano Rev. 2012;3. doi: 10.3402/nano.v3i0.16144. Epub 2012 Apr 9.
Novel thin film optoelectronic devices containing both inorganic colloidal semiconductor quantum dots (QDs) and organic semiconductor thin films have been widely investigated in recent years for a variety of applications. Here, we review one of the most versatile and successful methods developed to integrate these two dissimilar material classes into a functional multilayered device: contact printing of colloidal QD films. Experimental details regarding the contact printing process are outlined, and the key advantages of this QD deposition method over other commonly encountered techniques are discussed. The use of tapping mode atomic force microscopy (AFM) to effectively characterize QD film morphology both on an elastomeric stamp (before contact printing) and as-transferred to the organic semiconductor receiving film (after contact printing) is also described. Finally, we offer suggestions for future efforts directed toward the goal of rapid, continuous QD deposition over larger substrates for the advancement of hybrid optoelectronic thin film devices.
近年来，包含无机胶体半导体量子点（QD）和有机半导体薄膜的新型薄膜光电器件因各种应用而受到广泛研究。在此，我们回顾了一种将这两种不同材料类别集成到功能性多层器件中的最通用且成功的方法之一：胶体量子点薄膜的接触印刷。概述了接触印刷过程的实验细节，并讨论了这种量子点沉积方法相对于其他常见技术的关键优势。还描述了使用轻敲模式原子力显微镜（AFM）来有效表征弹性印章上（接触印刷前）和转移到有机半导体接收膜上（接触印刷后）的量子点薄膜形态。最后，我们针对在更大基板上进行快速、连续量子点沉积以推进混合光电子薄膜器件这一目标，对未来的工作提出了建议。
