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Dramatic Enhancement of Power Conversion Efficiency in Polymer Solar Cells by Conjugating Very Low Ratio of Triplet Iridium Complexes to PTB7
Author(s) -
Qian Min,
Zhang Ran,
Hao Jingyu,
Zhang Wenjun,
Zhang Qin,
Wang Jianpu,
Tao Youtian,
Chen Shufen,
Fang Junfeng,
Huang Wei
Publication year - 2015
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.201500730
Subject(s) - iridium , champion , materials science , conjugated system , energy conversion efficiency , polymer , power (physics) , chemical engineering , nanotechnology , optoelectronics , organic chemistry , chemistry , catalysis , physics , thermodynamics , law , composite material , engineering , political science
Various low ratios of triplet iridium complexes (0, 0.5, 1, 1.5, 2.5, and 5 mol%) are conjugated to the backbone of the famous champion donor polymer PTB7. At the same conditions, the power conversion efficiency for polymer containing 1% of Ir increases by 45%, 39%, and 31% in three batches of devices compared with control Ir‐free PTB7.