【文章名】Irradiation-induced molecular dipole reorientation in inverted polymer solar cell using small molecular electron collection layer - art. no. 203301
[摘要]：Inverted polymer solar cell is developed using small molecular tris(8-hydroxyquinolinato) aluminum (Alq(3)) as an electron collection layer between the active layer and indium-tin-oxide bottom cathode. Upon post-processing light irradiation by simulated solar illumination, the open-circuit voltage of the inverted device increases from 0.52V to 0.60 V, resulting in the enhancement of the power conversion efficiency from 2.54% to 3.33% with negligible change in the short-circuit current. The performance improvement is attributed to the removal of surface potential due to irradiation-induced molecular dipole reorientation in the Alq(3) layer, which reduces the charge transport barrier and improves the charge collection efficiency. (C) 2011 American Institute of Physics. [doi:10.1063/1.3663548]
