AVS 56th International Symposium & Exhibition
    Electronic Materials and Processing Tuesday Sessions
       Session EM-TuP

Paper EM-TuP6
Imaging Characterization Techniques Applied to Cu(In, Ga)Se2 Solar Cells

Tuesday, November 10, 2009, 6:00 pm, Room Hall 3

Session: Electronic Materials and Processing Poster Session
Presenter: S. Johnston, National Renewable Energy Laboratory
Authors: S. Johnston, National Renewable Energy Laboratory
N. Call, Colorado School of Mines
R. Sundaramoorthy, National Renewable Energy Laboratory
I. Repins, National Renewable Energy Laboratory
Correspondent: Click to Email
Imaging techniques developed over the past few years have the potential for quick and useful solar cell characterization. While initially applied to silicon, imaging techniques such as photoluminescence imaging, electroluminescence imaging, and lock-in thermography can also be successfully incorporated into Cu(In,Ga)Se2 solar cell development and process feedback. These techniques are capable of collecting images that provide values of minority-carrier lifetime, diffusion length, series resistance, and shunting. While point measurements such as transient decay lifetimes yield quantitative results that are valuable to research and development, imaging data can often be collected in seconds or less with better spatial resolution and be correlated to important solar cell parameters.