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Organic Photovoltaics with Multiple Donor–Acceptor Pairs
Author(s) -
Lee Jungho,
Lee Sang Myeon,
Chen Shanshan,
Kumari Tanya,
Kang SoHuei,
Cho Yongjoon,
Yang Changduk
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201804762
Subject(s) - organic solar cell , acceptor , ternary operation , materials science , open circuit voltage , photovoltaic system , photovoltaics , short circuit , nanotechnology , voltage , computer science , electrical engineering , polymer , physics , engineering , composite material , programming language , condensed matter physics
Compared with conventional organic solar cells (OSCs) based on single donor–acceptor pairs, terpolymer‐ and ternary‐based OSCs featuring multiple donor–acceptor pairs are promising strategies for enhancing the performance while maintaining an easy and simple synthetic process. Using multiple donor–acceptor pairs in the active layer, the key photovoltaic parameters (i.e., short‐circuit current density, open‐circuit voltage, and fill factor) governing the OSC characteristics can be simultaneously or individually improved by positive changes in light‐harvesting ability, molecular energy levels, and blend morphology. Here, these three major contributions are discussed with the aim of offering in‐depth insights in combined terpolymers and ternary systems. Recent exemplary cases of OSCs with multiple donor–acceptor pairs are summarized and more advanced research and perspectives for further developments in this field are highlighted.