Premium
Layer‐by‐Layer Processed Organic Solar Cells
Author(s) -
Wang Yifan,
Zhan Xiaowei
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201600414
Subject(s) - organic solar cell , acceptor , materials science , bilayer , layer (electronics) , deposition (geology) , fabrication , phase (matter) , nanotechnology , optoelectronics , charge carrier , charge (physics) , membrane , chemistry , organic chemistry , physics , polymer , medicine , paleontology , biochemistry , alternative medicine , pathology , quantum mechanics , sediment , composite material , biology , condensed matter physics
Layer‐by‐layer (LL) processes, i.e., sequential deposition of different active layers, are widely used in the fabrication of organic solar cells (OSCs). Recently, LL vacuum deposition and LL solution processes have attracted considerable attention. LL processing presents some advantages over the blend method: a) donor and acceptor layers can be easily and independently controlled and optimized; b) the charge carriers dissociated from excitons at the donor–acceptor interface are confined to each phase, so bimolecular recombination losses can be reduced; c) bilayer geometries enable an easier way for understanding the physical processes taking place at the donor–acceptor interface; d) desired vertical phase separation for charge extraction can be obtained through changing the sequence of donor and acceptor deposition. This report summarizes the recent developments of LL processed OSCs. The remaining problems and challenges, and the key research direction in near future are discussed.