Academic Year 2009-2010 Intern Project - Kayla Nguyen
QUANTITATIVE ELECTROSTATIC FORCE MICROSCOPY FOR SOLAR CELL CHARACTERIZATION
Mentor: Thuc-Quyen Nguyen
My project goal is to modify a commercial Electrostatic Force Microscopy (EFM) instrument to obtain quantitative data that is useful for organic solar cell materials. To obtain quantitative EFM results, we will separate the signal using two lock-in amplifiers, a function generator, a DC power source, a voltmeter, an oscilloscope, a signal access module, and a Nanoscope extender box. We will need to connect all these into a commercial scanning probe microscope. With the aid of the lock-in amplifiers, the magnitude of surface charges and the dielectric properties can be determined from the probe frequency shifts. A better understanding of the local surface charge and dielectric properties as a function of processing conditions and light intensity is crucial for producing more efficient solar cells.