EXPLORATION OF SURFACE POTENTIAL IN ORGANIC SEMICONDUCTORS:STATIC BEHAVIOR, KINETICS, AND MORPHOLOGY

TL;DRAbstract

Organic electronic devices offer cheaper solution processability than their inorganic counterparts and allow for the vast tailorability of synthetic chemistry to tune properties and efficiency. A critical fundamental challenge is to understand the dynamics and mechanisms of charge transport, particularly the role of defects and traps. This is motivated in part by research we performed in the origins and occurrence of negative differential resistance (NDR) in phthalocyanine systems, discussed below. In this dissertation, I have explored the surface potential energy distributions of organic, semiconducting thin films via Kelvin probe force microscopy and analyzed the effects of disorder in the samples. Thin films of commonly used materials in organic electronic devices were tested, both on short and long time scales, and throughout these experiments, a previously unnoted asymmetry in the energetic distribution was observed. To determine the cause of this asymmetry, the energetic distribu

Chat with Paper

AI Agents for this Paper