有机薄膜晶体管的老化及其对物理不可克隆功能可靠性的影响。

On the Aging of OTFTs and Its Impact on PUFs Reliability.

作者信息

Porti Marc, Palau Gerard, Crespo-Yepes Albert, Arnal Rus August, Ogier Simon, Ramon Eloi, Nafria Montserrat

机构信息

Department of Electronic Engineering, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.

FlexiIC SL, 08173 Sant Cugat del Vallés, Spain.

出版信息

Micromachines (Basel). 2024 Mar 26;15(4):443. doi: 10.3390/mi15040443.

DOI:10.3390/mi15040443

PMID:38675255

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11051788/

Abstract

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, -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.

摘要

鉴于当前印刷技术的成熟度，有机薄膜晶体管（OTFT）仍然表现出较高的初始可变性，这对于其在安全应用中的开发可能是有益的。在这项工作中，对商用OTFT的与工艺相关的可变性和老化进行了表征，以评估基于OTFT的物理不可克隆功能（PUF）实现的可行性。对于我们的器件，基于PUF表现出良好的均匀性和独特性。然而，由于在OTFT中观察到的瞬态和老化效应，PUF的可靠性可能会受到影响，这可能会阻碍所生成指纹的可重复性。已经对OTFT的老化进行了系统研究，以评估PUF的可靠性。我们的结果表明，可以减轻观察到的瞬态和老化效应，从而提高基于OTFT的PUF的可靠性。