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Semi‐Transparent, Micrometer Resolution p‐NiO/n‐ZnO Heterojunction Diode Temperature Sensors with Ultrathin Metal Anode

Title
Semi‐Transparent, Micrometer Resolution p‐NiO/n‐ZnO Heterojunction Diode Temperature Sensors with Ultrathin Metal Anode
Authors
Lee, JunheeHong, NariHong, WoongkiKim, DuheeHwang, YujinJang, JaewonKang, Hongki
DGIST Authors
Lee, Junhee; Hong, Nari; Hong, Woongki; Kim, Duhee; Hwang, Yujin; Jang, Jaewon; Kang, Hongki
Issue Date
2022-06
Citation
Advanced Materials Technologies, 7(6)
Type
Article
Author Keywords
ultrathin metal filmstransparent electrodesheterojunction diodestemperature sensorswide bandgap semiconductors
Keywords
WORK FUNCTIONTRANSPARENTFILMSENSITIVITYENERGYCELLSPOWER
ISSN
2365-709X
Abstract
Various temperature sensitive biological mechanisms have been utilized for new biomedical engineering tools such as neuromodulation, cancer cell hyperthermia or photothermal therapy. Optically transparent and high spatio-temporal resolution temperature sensors are needed to precisely analyze the biological effects that occur in response to the temperature changes. In this work, semi-transparent p-NiO/n-ZnO heterojunction diode-based temperature sensors with 100 µm-diameter ultrathin transparent Au/Ag metal anodes is introduced. The fabricated diode temperature sensors accurately measure temperature changes from 25 to 80 °C, which is of significant interest in many biomedical engineering applications. The sensors also exhibit adequate transparency over the entire visible light spectrum for biomedical imaging including fluorescent microscopy. Low-power operation of the temperature sensor (<0.2 nW) is achieved to avoid a self-heating effect. The micro-scale spatial resolution of the transparent temperature sensors is especially useful for cellular resolution bio-imaging, optical neural recording, and optical bio-modulation where transparency and high-resolution temperature sensing are necessary. © 2021 Wiley-VCH GmbH
URI
http://hdl.handle.net/20.500.11750/16049
DOI
10.1002/admt.202100923
Publisher
John Wiley & Sons Inc.
Related Researcher
  • Author Kang, Hongki Advanced Electronic Devices Research Group(AEDRG) - Kang Lab.
  • Research Interests Bioelectronics; Neural interfaces; Flexible electronics; Printed electronics; 바이오전자; 신경 인터페이스; 뇌공학; 플렉서블 전자; 반도체 소자; 인쇄 전자
Files:
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Collection:
Department of Electrical Engineering and Computer ScienceAdvanced Electronic Devices Research Group(AEDRG) - Kang Lab.1. Journal Articles


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