Prof. Tao Wang presented an oral talk in the SPIE Optics+Photonics 2014 meeting

The SPIE Optics+Photonics 2014 meeting was held in San Diego, USA, on Aug.17-21th 2014. Prof. Tao Wang attended the meeting and gave an oral talk on "Vertical stratification in organic bulk heterojunction solar cells and its impacts on device performance".