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A Novel Mitigation Mechanism for Photo‐Induced Trapping in an Anthradithiophene Derivative Using Additives
Author(s) -
Nasrallah Iyad,
Ravva Mahesh Kumar,
Broch Katharina,
Novak Jiri,
Armitage John,
Schweicher Guillaume,
Sadhanala Aditya,
Anthony John E.,
Bredas JeanLuc,
Sirringhaus Henning
Publication year - 2020
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.202000250
Subject(s) - acene , materials science , semiconductor , trapping , molecule , organic semiconductor , small molecule , intercalation (chemistry) , nanotechnology , molecular electronics , crystal (programming language) , derivative (finance) , chemical physics , optoelectronics , chemical engineering , organic chemistry , chemistry , ecology , biochemistry , financial economics , economics , biology , computer science , engineering , programming language
A novel trap mitigation mechanism using molecular additives, which relieves a characteristic early turn‐on voltage in a high‐mobility p‐type acene‐based small‐molecule organic semiconductor, when processed from hydrous solvents, is reported. The early turn‐on voltage is attributed to photo‐induced trapping, and additive incorporation is found to be very effective in suppressing this effect. Remarkably, the molecular additive does not disturb the charge transport properties of the small‐molecule semiconductor, but rather intercalates in the crystal structure. This novel technique allows for the solution‐processing of small molecular semiconductors from hydrous solvents, greatly simplifying manufacturing processes for large‐area electronics. Along with various electric and spectroscopic characterization techniques, simulations have given a deeper insight into the trap mitigation effect induced by the additive.