Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 25: Interfaces and Thin Films II

CPP 25.11: Vortrag

Dienstag, 13. März 2018, 12:45–13:00, PC 203

Grazing Incidence Small Angle X-ray Scattering Study on Nucleation Processes during Electrodeposition — •Gilles Moehl and Andrew Hector — Chemistry, University of Southampton, Southampton, SO17 1BJ, UK

Developing the next generation of electronic devices requires the deposition of high-quality functional materials in a controlled fashion in complex structures in order to unleash the true potential of devices such as thermoelectrics, phase change memory (PCM) and infra-red detectors. Within EPSRC programme grant ADEPT *Advanced Devices by ElectroPlaTing* (EP/N035437/1), new techniques and materials are to be developed for that matter. Previously, it has been shown that the electrodeposition of materials from weakly-coordinating solvents is capable of producing such complex structures (1). Nucleation, being the earliest stage of any deposition process is a key feature which has to be understood in order to achieve fully controlled and reproducibly fabricated materials. This requires techniques capable of monitoring the formation of deposited material on a substrate at various stages in time on very short length scales. Grazing incidence small angle scattering (GISAXS) allows for this, giving insight into the structural properties of the investigated layer and thus possibly enables the derivation of a growth model. In this work, the nucleation of the thermoelectric bismuth telluride Bi2Te3 and gold during electrodeposition from dichloromethane and an aqueous electrolyte, respectively, onto titanium nitride (TiN) is investigated through GISAXS. (1).Bartlett, Philip N., et al. Materials Horizons 2.4 (2015): 420-426.