Noah M. Johnson, Yuriy Y. Smolin, Chris Shindler, Daniel Hagaman, Masoud Soroush, Kenneth K. S. Lau, Hai-Feng Ji and 1 Department of Chemistry, Drexel University, Philadelphia, PA 19104, USA
We report the fabrication and characterization of photochromic dye sensitized solar cells that possess the ability to change color depending on external lighting conditions. This device can be used as a. smart. window shade that tints, collects the sun's energy, and blocks sunlight when the sun shines, and is completely transparent at night.