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In-situ TEM

There is a distinct relationship between the properties of materials and their structure as well as their composition during operation in a device. This can only be tackled, if the materials are investigated in-situ under various stimuli. We currently have several projects on observing the growth as well as the property change of materials while they are synthesized or while they are treated, respectively.

In-situ observation of growth

A gas mixing system, which can flow toxic and pyrophoric gases into a special sample holder in the TEM has been designed. This setup is used to study the growth kinetics and thermodynamics of semiconductors as well as to investigate thermal annealing in specific gas atmospheres.

Influence of electric fields on structure as well as charge distribution

A electrical biasing / heating holder allows us to study the change of charge distribution as well as composition and defect structure in batteries as well as in semiconductor samples as a function of applied bias.

In-situ observation of batteries under operating conditions:

Aside from the electrical biasing, which is used to study the development of solid electrolyte containing batteries under operating condition, a liquid cell allows us to investigate batteries working with liquid electrolytes in operando.