The effect of small molecule electron transporting materials on the performance

It has been studied that the effect of different electron transporting materials, including 2-(4-biphenyl)-5-(4-tert-butylphenyl)1,3,4-oxidiazole (PBD), tris-8-hydroxy-quinolinato aluminum and Bis[2-(2-benzothiazoly) phenolato]zinc(II) on the properties of solar cells based on poly(3-hexylthiophene)