%A Jong Hyuk Yim
%A Sung‐yoon Joe
%A Duc Cuong Nguyen
%A Shin Young Ryu
%A Na Young Ha
%A Y. H. Ahn
%A Ji‐Yong Park
%A Soonil Lee
%J physica status solidi - Rapid Research Letters
%T True nature of active layers in organic solar cells fabricated by sequential casting of donor and acceptor layers
%X The operation characteristics of nominal bilayer (BL) organic solar cells (OSCs), the active layers (ALs) of which consisted of sequentially casted bottom P3HT donor and top ICBA acceptor layers, resembled those of OSCs with bulk heterojunction (BHJ) ALs. Optical analysis and device simulations showed that such resemblance can be attributed to a similarity in the micromorphology of ALs; as‐deposited BL‐type ALs transformed spontaneously into BHJ‐type ALs. The inclusion of P3HT nanowires (NWs) in the donor layers resulted in different AL micromorphology and consequently a larger power conversion efficiency. Separate assessment of the exciton generation and charge–carrier transport and/or extraction showed that the contribution of P3HT NWs was more prominent in optical effects.
%N 2
%P 1600415(1)-1600415(4)
%V 11
%D 2016
%I WILEY‐VCH Verlag
%R 10.1002/pssr.201600415
%L SisLab3145