24 August 2017 Chemical and charge transfer studies on interfaces of a conjugated polymer and ITO
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Abstract
Conjugated oligomers and polymers are very attractive for potential future plastic electronic and opto-electronic device applications such as plastic photo detectors and solar cells, thermoelectric devices, field effect transistors, and light emitting diodes. Understanding and optimizing charge transport between an active polymer layer and conductive substrate is critical to the optimization of polymer based electronic and opto-electronic devices. This study focused on the design, synthesis, self-assembly, and electron transfers and transports of a phosphonic acid end-functionalized polyphenylenevinylene (PPV) that was covalently attached and self-assembled onto an Indium Tin Oxide (ITO) substrate. This study demonstrated how atomic force microscopy (AFM) can be an effective characterization technique in conjunction with conventional electron transfer methods, including cyclic voltammetry (CV), towards determining electron transfer rates in polymer and polymer/conductor interface systems. This study found that the electron transfer rates of covalently attached and self-assembled films were much faster than the spin coated films. The knowledge from this study can be very useful for designing potential polymer based electronic and opto-electronic thin film devices.
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Tanya M. S. David, Tanya M. S. David, Wondwosson Arasho, Wondwosson Arasho, O’Neil Smith, O’Neil Smith, Kunlun Hong, Kunlun Hong, Carl Bonner, Carl Bonner, Sam-Shajing Sun, Sam-Shajing Sun, } "Chemical and charge transfer studies on interfaces of a conjugated polymer and ITO", Proc. SPIE 10348, Physical Chemistry of Semiconductor Materials and Interfaces XVI, 103481G (24 August 2017); doi: 10.1117/12.2273006; https://doi.org/10.1117/12.2273006
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