Young Researcher Paper Award 2023
🥇Winners

Notice of retraction
Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

Instructions to authors
English    日本語

Instructions for manuscript preparation
English    日本語

Template
English

Publisher
 MYU K.K.
 Sensors and Materials
 1-23-3-303 Sendagi,
 Bunkyo-ku, Tokyo 113-0022, Japan
 Tel: 81-3-3827-8549
 Fax: 81-3-3827-8547

MYU Research, a scientific publisher, seeks a native English-speaking proofreader with a scientific background. B.Sc. or higher degree is desirable. In-office position; work hours negotiable. Call 03-3827-8549 for further information.


MYU Research

(proofreading and recording)


MYU K.K.
(translation service)


The Art of Writing Scientific Papers

(How to write scientific papers)
(Japanese Only)

Sensors and Materials, Volume 29, Number 4 (2017)
Copyright(C) MYU K.K.
pp. 363-370
S&M1328 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2017.1517
Published: April 19, 2017

High Responsivity in GaN Ultraviolet Photodetector Grown on a Periodic Trapezoid-Column Patterned Sapphire Substrate [PDF]

Kuan-Ting Liu, Shoou-Jinn Chang, and Sean Wu

(Received August 30, 2016; Accepted January 24, 2017)

Keywords: GaN ultraviolet photodetector, metal-semiconductor-metal, periodic trapezoid column-shaped patterned sapphire substrate, responsivity, UV-to-visible rejection ratio

A GaN ultraviolet (UV) photodetector with a metal-semiconductor-metal structure is grown on a periodic trapezoid-column patterned sapphire substrate by metalorganic chemical vapor deposition. Under 5 V reverse bias, the photodetector fabricated on such a patterned sapphire substrate exhibits a lower dark current, a higher photocurrent, a much larger UV-to-visible rejection ratio, and a 476% enhancement in the maximum responsivity than those of the photodetector fabricated on a conventional flat sapphire substrate. These phenomena may all be attributed to the reduction in threading dislocation density and the greater number of photogenerated carriers caused by the improved quality of the GaN film, as well as the reflection and/or scattering of unabsorbed photons on the interface between the GaN film and the periodic trapezoid-column pattern of the substrate.

Corresponding author: Kuan-Ting Liu


Cite this article
Kuan-Ting Liu, Shoou-Jinn Chang, and Sean Wu, High Responsivity in GaN Ultraviolet Photodetector Grown on a Periodic Trapezoid-Column Patterned Sapphire Substrate, Sens. Mater., Vol. 29, No. 4, 2017, p. 363-370.



Forthcoming Regular Issues


Forthcoming Special Issues

Special Issue on Applications of Novel Sensors and Related Technologies for Internet of Things
Guest editor, Teen-Hang Meen (National Formosa University), Wenbing Zhao (Cleveland State University), and Cheng-Fu Yang (National University of Kaohsiung)
Call for paper


Special Issue on Advanced Sensing Technologies for Green Energy
Guest editor, Yong Zhu (Griffith University)
Call for paper


Special Issue on Room-temperature-operation Solid-state Radiation Detectors
Guest editor, Toru Aoki (Shizuoka University)
Call for paper


Special Issue on International Conference on Biosensors, Bioelectronics, Biomedical Devices, BioMEMS/NEMS and Applications 2023 (Bio4Apps 2023)
Guest editor, Dzung Viet Dao (Griffith University) and Cong Thanh Nguyen (Griffith University)
Conference website
Call for paper


Special Issue on Advanced Sensing Technologies and Their Applications in Human/Animal Activity Recognition and Behavior Understanding
Guest editor, Kaori Fujinami (Tokyo University of Agriculture and Technology)
Call for paper


Special Issue on Piezoelectric Thin Films and Piezoelectric MEMS
Guest editor, Isaku Kanno (Kobe University)
Call for paper


Copyright(C) MYU K.K. All Rights Reserved.