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Design of Diketopyrrolopyrrole (DPP)‐Based Small Molecules for Organic‐Solar‐Cell Applications
Author(s) -
Tang Ailing,
Zhan Chuanlang,
Yao Jiannian,
Zhou Erjun
Publication year - 2017
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.201600013
Subject(s) - small molecule , materials science , photovoltaic system , organic solar cell , molecule , nanotechnology , conjugated system , acceptor , alkyl , electron acceptor , solar cell , combinatorial chemistry , polymer , organic chemistry , optoelectronics , chemistry , ecology , biochemistry , physics , composite material , biology , condensed matter physics
After the first report in 2008, diketopyrrolopyrrole (DPP)‐based small‐molecule photovoltaic materials have been intensively explored. The power conversion efficiencies (PCEs) for the DPP‐based small‐molecule donors have been improved up to 8%. Furthermore, through judicious structure modification, DPP‐based small molecules can also be converted into electron‐acceptor materials, and, recently, some exciting progress has been achieved. The development of DPP‐based photovoltaic small molecules is summarized here, and the photovoltaic performance is discussed in relation to structural modifications, such as the variations of donor–acceptor building blocks, alkyl substitutions, and the type of conjugated bridges, as well as end‐capped groups. It is expected that the discussion will provide a guideline in the exploration of novel and promising DPP‐containing photovoltaic small molecules.