Minimizing interfacial losses in inverted organic solar cells comprising Al-doped ZnO

作者：Gadisa Abay^*; Liu Yingchi; Samulski Edward T; Lopez Rene

来源：Applied Physics Letters, 2012, 100(25): 253903.

DOI：10.1063/1.4729861

We demonstrated a 35% enhancement in the efficiency of inverted solar cells as a result of increased open-circuit voltage and fill factor by adsorbing an ultrathin layer of a ruthenium dye N719 on an aluminum-doped zinc oxide (ZnO-Al) electron collecting interfacial layer. The interface modification with N719 changes the charge injection levels as indicated by ultraviolet photoemission spectroscopy. The efficiency of inverted solar cells comprising a bulk heterojunction photo-active film of poly(3-hexylthiophene) and phenyl-C-61-butyric acid methyl ester has increased from similar to 2.80% to 3.80% upon employing the dye modification of the electrode interface.

• 出版日期2012-6-18