AUTOMATION OF A CURRENT-VOLTAGE CHARACTERIZATION SYSTEM STUDENTS ADVISORS PHILLIP BUTLER DR. DOUG HARPER

JEFFREY DEJARNETTE DR. SANJU GUPTA

OVERVIEW

• Develop a system that will allow a researcher to perform a current versus voltage characterization of a sample

• Use Labview to autonomously control and communicate with stand-alone instrument

• Acquire Current-Voltage data of various materials (films)

• Project Unique Attributes

• Instrument Control

• Third Party interfacing

OBJECTIVES

• Provide alternative selections such as

• 2 or 4 probe system

• Sourcing current or voltage

• Single run or sweep function

• Send commands as strings

• Export data as text (delimited) document or spreadsheet format to be further analyzed

• Provide documentation for future expansions

EQUIPMENT

• Keithley 2400 Sourcemeter

• PC with Labview

• Electrical probes

PROCESS

GRAPH ARRANGEMENTSI vs V V vs timeI vs time

MODEL FRONT PANEL

WHERE WE ARE NOW

• Communication established

• Source meter initialization strings and codes

• Shutdown procedure

• Documenting setup procedures and progress

WHAT IS NEXT?

• Translate and export data as .txt files (ASCII)

• User friendly commands

• Reset setup preferences

• Pause/Stop data collection