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Flexible Photodetectors: Flexible Light‐to‐Frequency Conversion Circuits Built with Si‐Based Frequency‐to‐Digital Converters via Complementary Photosensitive Ring Oscillators with p‐Type SWNT and n‐Type a‐IGZO Thin Film Transistors (Small 26/2021)
Author(s) -
Jeong Jinheon,
Seo Seung Gi,
Yu SeungMyeong,
Kang Yunha,
Song Junyoung,
Jin Sung Hun
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202170134
Subject(s) - photodetector , electronic circuit , materials science , cmos , converters , transistor , optoelectronics , noise (video) , signal (programming language) , computer science , electronic engineering , electrical engineering , engineering , voltage , artificial intelligence , image (mathematics) , programming language
As a system‐level photodetector, flexible light‐to‐frequency conversion circuits (LFCs) are implemented using a‐IGZO and SWNT thin‐film transistors. Combined with LFC, CMOS‐based frequency‐to‐digital converter is integrated for digitization of analog signal from LFCs. With the better noise immunity on LFCs, the proposed system by Junyoung Song, Sung Hun Jin, and co‐workers (article number 2008131) will significantly contribute to the newly conceived Internet‐of‐Things (IoT) or smart flexible sensor systems.