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However, their susceptibility to processing\u2010induced contamination is not well understood. Here, it is shown that many organic electronic devices reported so far may have been unintentionally contaminated, thus affecting their performance, water uptake, and thin film properties. Nuclear magnetic resonance spectroscopy is used to detect and quantify contaminants originating from the glovebox atmosphere and common laboratory consumables used during device fabrication. Importantly, this in\u2010depth understanding of the sources of contamination allows the establishment of clean fabrication protocols, and the fabrication of organic field effect transistors (OFETs) with improved performance and stability. This study highlights the role of unintentional contaminants in organic electronic devices, and demonstrates that certain stringent processing conditions need to be met to avoid scientific misinterpretation, ensure device reproducibility, and facilitate performance stability. The experimental procedures and conditions used herein are typical of those used by many groups in the field of solution\u2010processed organic semiconductors. Therefore, the insights gained into the effects of contamination are likely to be broadly applicable to studies, not just of OFETs, but also of other devices based on these materials.<\/jats:p>","DOI":"10.1002\/smtd.202300476","type":"journal-article","created":{"date-parts":[[2023,9,4]],"date-time":"2023-09-04T05:09:50Z","timestamp":1693804190000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Effects of Processing\u2010Induced Contamination on Organic Electronic Devices"],"prefix":"10.1002","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0300-9249","authenticated-orcid":false,"given":"Dimitrios","family":"Simatos","sequence":"first","affiliation":[{"name":"Optoelectronics Group Cavendish Laboratory University of Cambridge  Cambridge CB3 0HE UK"},{"name":"Yusuf Hamied Department of Chemistry University of Cambridge  Cambridge CB2 1EW 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