Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published April 2013 | Published
Journal Article Open

Accounting for Localized Defects in the Optoelectronic Design of Thin-Film Solar Cells


Controlled nanostructuring of thin-film solar cells offers a promising route toward increased efficiency through improved light trapping. Many such light trapping designs involve structuring of the active region itself. Optimization of these designs is aided by the use of computer simulations that account for both the optics and electronics of the device. We describe such a simulation-based approach that accounts for experimental tradeoffs between high-aspect ratio structuring and electronic material quality. Our model explicitly accounts for localized regions of degraded material quality that is induced by light trapping structures in n-i-p a-Si:H solar cells. We find that the geometry of the defects couples to the geometry of light absorption profiles in the active region and that this coupling impacts the spectral response of the device. Our approach yields insights into the nanoscale device physics that is associated with localized geometry-induced defects and provides a framework for full optoelectronic optimization.

Additional Information

© 2013 IEEE. Open Access. Manuscript received May 22, 2012; accepted January 8, 2013. Date of publication February 5, 2013; date of current version March 18, 2013. This work was supported by the "Light–Material Interactions in Energy Conversion" Energy Frontiers Research Center, United States Department of Energy, under grant DE-SC0001293, LBL Contract DE-AC02–05CH11231. The work of M. G. Deceglie was supported by the Office of Basic Energy Sciences under Contract DOE DE-FG02–07ER46405 and the National Central University's Energy Research Collaboration. The authors would like to thank M. Kelzenberg and D. Turner-Evans for useful discussions regarding technical aspects of the simulations.

Attached Files

Published - 06450024.pdf


Files (399.0 kB)
Name Size Download all
399.0 kB Preview Download

Additional details

August 22, 2023
October 23, 2023