TY - JOUR AU - Hemmatzadeh, Reza AU - Mohammadi, Ahmad TI - Improving optical absorptivity of natural dyes for fabrication of efficient dye-sensitized solar cells JO - Journal of Theoretical and Applied Physics VL - 0 IS - 1 SP - 0 EP - 0 PY - 2013 DO - 10.1186/2251-7235-7-57 ER -