creator Ha, Seonbaek advisor Prakash, Jai Dye-Sensitized Solar Cells (DSSCs) have been investigated using various methods including: varied illumination density, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and equivalent circuit models. Under various illumination conditions, DSSCs were affected by many factors: exposure time, surrounding temperature, light intensity and UV (ultraviolet) radiation. In order to understand and identify aging phenomena, as well as ionic and electronic processes, a number of physical and electrochemical experiments were performed. The internal resistances among the components of DSSCs showed distinct features under different experimental conditions. For long-term stability and high performance of DSSCs, it is necessary to investigate the characteristics of these internal resistances and develop methods to reduce them. By using electrochemical impedance spectroscopy (EIS) and equivalent circuit models, it was possible to demonstrate the electrochemical phenomena and degradation characteristics of DSSCs. Submitted by Dana Lamparello (dlampare@iit.edu) on 2012-02-29T16:56:56Z No. of bitstreams: 1 MS_Thesis_HSB_Final_0509.pdf: 1105649 bytes, checksum: 9b2c8bfe15d40770edff2e59839c7ac5 (MD5) Made available in DSpace on 2012-02-29T16:56:56Z (GMT). No. of bitstreams: 1 MS_Thesis_HSB_Final_0509.pdf: 1105649 bytes, checksum: 9b2c8bfe15d40770edff2e59839c7ac5 (MD5) Previous issue date: 2011-05 M.S. in Chemical Engineering, May 2011 2011-05-09 2011-05 http://hdl.handle.net/10560/2530 en Thesis born digital application/pdf In Copyright http://rightsstatements.org/page/InC/1.0/ Restricted Access ChBE / Chemical and Biological Engineering Illinois Institute of Technology Affiliated department