Premium
Correlation of Disorder and Charge Transport in a Range of Indacenodithiophene‐Based Semiconducting Polymers
Author(s) -
Nikolka Mark,
Hurhangee Michael,
Sadhanala Aditya,
Chen Hu,
McCulloch Iain,
Sirringhaus Henning
Publication year - 2018
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201700410
Subject(s) - materials science , polymer , organic semiconductor , conjugated system , charge carrier , transistor , nanotechnology , organic electronics , optoelectronics , oled , diode , chemical physics , electrical engineering , chemistry , composite material , voltage , layer (electronics) , engineering
Over the past 25 years, various design motifs have emerged for the development of organic semiconductors for demanding applications in flexible organic light emitting diode display backplanes or even printed organic logic. Due to their large area uniformity paired with high charge carrier mobilities, conjugated polymers have attracted increasing attention in this respect. However, the performances delivered by current generation conjugated polymers still fall short of many industrial requirements demanding devices with ideal transistor characteristics and higher mobilities. The discovery of conjugated polymers with low energetic disorder, such as the indacenodithiophene‐based polymer indacenodithiophene‐ co ‐benzothiadiazole, represent an exciting opportunity to breach this chasm if these materials can be further optimized while maintaining their low disorder. Here, it is shown how both the charge transport properties as well as the energetic disorder are affected by tuning the molecular structure of a large range of indacenodithiophene‐based semiconducting polymer derivatives. This study allows to understand better the interplay between molecular design and structure of the polymer backbone and the degree of energetic disorder that governs the charge transport properties in thin polymer films.