Degree Type


Date of Award


Degree Name

Doctor of Philosophy


Physics and Astronomy


Condensed Matter Physics

First Advisor

Kai-Ming Ho


My research projects are focused on application of photonics, optics and micro-fabrication technology in energy related elds. Photonic crystal fabrication research has the potential to help us generate and use light more effciently. In order to fabricate active 3D woodpile photonic structure devices, a woodpile template is needed to enable the crystal growth process. We developed a silica woodpile template fabrication process based on two polymer transfer molding technique. A silica woodpile template is demonstrated to work with temperature up to 900 °C. It provides a more economical way to explore making better 3D active woodpile photonic devices like 3D photonic light emitting diodes (LED). Optical research on solar cell testing has the potential to make our energy generation more effcient and greener. PL imaging and LBIC mapping are used to measure CdTe solar cells with different back contacts. A strong correlation between PL image defects and LBIC map defects is observed. This opens up potential application for PL imaging in fast solar cell inspection. 2D laser IV scan shows its usage in 2D parameter mapping. We show its ability to generate important information about solar cell performance locally around PL image defects.


Copyright Owner

Geyuan Liu



File Format


File Size

90 pages