Relating nanoscale chemistry to electrical properties for high-efficiency Cu(In,Ga)Se2 solar cells
Cu(In,Ga)Se2 solar cells demonstrate better efficiencies than poly-crystalline Si and all other thin films technologies. Yet most of the gains in efficiency have been empirical and further fundamental understanding is necessary for continued improvement. This thesis will use advanced characterization techniques to show the unique self-compensating behavior along with alkali impurity incorporation as key reasons for the technology’s advancement. Atom probe tomography and scanning transmission electron microscopy are utilized to relate nanoscale chemistry to band structure. High point-defect ...
(For more, see "View full record.")