SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 95, no. 4, page. 1146 - 1150, 2011-04
ELECTRONIC MATERIALS LETTERS, vol. 6, no. 1, page. 41 - 50, 2010-03
MACROMOLECULAR RAPID COMMUNICATIONS, vol. 28, no. 12, page. 1366 - 1372, 2007-06