Free Keithley Online Seminar Explores Low Power Test Methods for Graphene-based Materials

To register for this event, visit http://www.keithley.info/graphene.

Graphene material and its many derivations hold the promise of enabling many new applications, of which a large portion are electrical in nature. Correspondingly, there is a growing need to maximize the effectiveness of electrical tests performed on Graphene-based materials and active structures.

Two of the most important electrical tests used to evaluate quality and performance of Graphene material and structures are resistivity and quantum Hall effect. These measurements require extremely low level voltage/current capable instrumentation and a number of specific techniques for accurate and repeatable results to be obtained without degrading or destroying samples.

In this seminar Robert Green, Senior Market Development Manager at Keithley Instruments, will present techniques for making low current and low resistance measurements on materials such as Graphene, which must be characterized at very low power levels. Those participating in the seminar will learn:

· Measurement configurations for determining resistance as a function of substrate voltage, current-voltage characterization, and Hall voltage measurements.

· How thermal offsets and noise sources can be minimized through measurement techniques and careful probe interface construction and cabling choices.

· How to obtain maximum accuracy and sensitivity with minimal parasitic errors and lowest potential for transient damage to the Graphene device structures under test.

· Measurement techniques that effectively reject parasitic thermal offset voltages yielding higher accuracies and resolutions through the use of offset compensation, source-measure based techniques.

· Driven guard techniques and proper shielded cable selection approaches working in conjunction with specialized voltage/current sources and nanovoltmeter instruments to optimize settling times and quality of measurements.

Target Audience

This seminar is recommended for researchers, engineers, and scientists in areas such as materials science, solid state physics, condensed matter physics, chemistry, and electrical engineering who wish to get a better understanding of how to make low current and low resistance measurements on materials such as Graphene that must be characterized at very low power levels.