65359b6aa256c4563f649f067070560c micromachines-15-00443.pdf 36a16053a7c591cb03fdc2adde61f5f218b597fd micromachines-15-00443.pdf 79d8c4f492c65375d65c105242f642d1df6de1d896ec4235dc6a163ada3ffe9d micromachines-15-00443.pdf Title: On the Aging of OTFTs and Its Impact on PUFs Reliability Subject: Given the current maturity of printed technologies, Organic Thin-Film Transistors (OTFT) still show high initial variability, which can be beneficial for its exploitation in security applications. In this work, the process-related variability and aging of commercial OTFTs have been characterized to evaluate the feasibility of OTFTs-based Physical Unclonable Functions (PUFs) implementation. For our devices, ID-based PUFs show good uniformity and uniqueness. However, PUFs’ reliability could be compromised because of the observed transient and aging effects in the OTFTs, which could hinder the reproducibility of the generated fingerprints. A systematic study of the aging of OTFTs has been performed to evaluate the PUFs’ reliability. Our results suggest that the observed transient and aging effects could be mitigated so that the OTFTs-based PUFs’ reliability could be improved. Keywords: OTFT; variability; reliability; PUF; aging; BTI; HCI Author: Marc Porti, Gerard Palau, Albert Crespo-Yepes, August Arnal Rus, Simon Ogier, Eloi Ramon and Montserrat Nafria Creator: LaTeX with hyperref Producer: pdfTeX-1.40.25 CreationDate: Tue Mar 26 16:09:39 2024 CET ModDate: Tue Mar 26 16:13:16 2024 CET Custom Metadata: no Metadata Stream: no Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 10 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 3025742 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- EROCFA+VnURWPalladioL Type 1 Custom yes yes yes 10 0 IVSLBN+URWPalladioL-Bold Type 1 Custom yes yes yes 16 0 WJTLXB+URWPalladioL-Roma Type 1 Custom yes yes yes 22 0 KZKDRH+URWPalladioL-Ital Type 1 Custom yes yes yes 27 0 BEQZXU+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 43 0 OVNEXW+EURM10 Type 1 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Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 372 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: section.1 Item: Title: Experimental Destination: section.2 Item: Title: Results Destination: section.3 Children: Item: Title: OTFTs Time-Zero Variability and PUF Performance Destination: subsection.3.1 Item: Title: Impact of Electrical Stresses on the OTFTs’ Performance Destination: subsection.3.2 Item: Title: Pre-Stress as a Way to Improve PUFs’ Reliability Destination: section.4 Item: Title: Conclusions Destination: section.5 Item: Title: References Destination: section.6 Info: Title: On the Aging of OTFTs and Its Impact on PUFs Reliability Author: Marc Porti, Gerard Palau, Albert Crespo-Yepes, August Arnal Rus, Simon Ogier, Eloi Ramon and Montserrat Nafria Subject: Given the current maturity of printed technologies, Organic Thin-Film Transistors (OTFT) still show high initial variability, which can be beneficial for its exploitation in security applications. In this work, the process-related variability and aging of commercial OTFTs have been characterized to evaluate the feasibility of OTFTs-based Physical Unclonable Functions (PUFs) implementation. For our devices, ID-based PUFs show good uniformity and uniqueness. However, PUFs’ reliability could be compromised because of the observed transient and aging effects in the OTFTs, which could hinder the reproducibility of the generated fingerprints. A systematic study of the aging of OTFTs has been performed to evaluate the PUFs’ reliability. Our results suggest that the observed transient and aging effects could be mitigated so that the OTFTs-based PUFs’ reliability could be improved. 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