UV-A Sensor Based on 6H-SiC Schottky Photodiode

In this paper, we propose a UV-A sensor based on a 6H-SiC Schottky photodiode with a thin Ni<sub>2</sub>Si front electrode and an integrated hydrogenated silicon nitride (SiN:H) dielectric filter. 6H-SiC prototypes were fabricated by using a manufacturing process to a large extent alread...

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Main Authors: Antonella Sciuto, Massimo Cataldo Mazzillo, Salvatore Di Franco, Giovanni Mannino, Paolo Badala, Lucio Renna, Corrado Caruso
Format: Article
Language:English
Published: IEEE 2017-01-01
Series:IEEE Photonics Journal
Subjects:
Online Access:https://ieeexplore.ieee.org/document/7814212/
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author Antonella Sciuto
Massimo Cataldo Mazzillo
Salvatore Di Franco
Giovanni Mannino
Paolo Badala
Lucio Renna
Corrado Caruso
author_facet Antonella Sciuto
Massimo Cataldo Mazzillo
Salvatore Di Franco
Giovanni Mannino
Paolo Badala
Lucio Renna
Corrado Caruso
author_sort Antonella Sciuto
collection DOAJ
description In this paper, we propose a UV-A sensor based on a 6H-SiC Schottky photodiode with a thin Ni<sub>2</sub>Si front electrode and an integrated hydrogenated silicon nitride (SiN:H) dielectric filter. 6H-SiC prototypes were fabricated by using a manufacturing process to a large extent already implemented on 4H-SiC poly-type for the realization of a high signal-to-noise ratio ultraviolet (UV) sensor already commercialized. The results obtained on 6H-SiC prototypes show optimal electrical performance with dark current density lower than 0.2 nA&#x002F;cm<sup>2</sup> at room temperature and 10 V reverse bias. The use of 6H polytype allows shifting of the UV sensor response from 290 nm peak responsivity wavelength measured on standard 4H-SiC photodiodes to 360 nm wavelength in 6H-SiC prototypes with an integrated SiN:H filter exactly in the middle of the UV-A band (320&#x2013;400 nm) with a simultaneous consistent reduction of the optical response in UV-C and UV-B regions below 320 nm wavelength.
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issn 1943-0655
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publishDate 2017-01-01
publisher IEEE
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series IEEE Photonics Journal
spelling doaj-art-8f294367b0a2425bbb908e1c618293882025-08-20T03:16:04ZengIEEEIEEE Photonics Journal1943-06552017-01-019111010.1109/JPHOT.2017.26515857814212UV-A Sensor Based on 6H-SiC Schottky PhotodiodeAntonella Sciuto0Massimo Cataldo Mazzillo1Salvatore Di Franco2Giovanni Mannino3Paolo Badala4Lucio Renna5Corrado Caruso6CNR-IMM, Catania, ItalySTMicroelectronics, Catania, ItalyCNR-IMM, Catania, ItalyCNR-IMM, Catania, ItalySTMicroelectronics, Catania, ItalySTMicroelectronics, Catania, ItalySTMicroelectronics, Catania, ItalyIn this paper, we propose a UV-A sensor based on a 6H-SiC Schottky photodiode with a thin Ni<sub>2</sub>Si front electrode and an integrated hydrogenated silicon nitride (SiN:H) dielectric filter. 6H-SiC prototypes were fabricated by using a manufacturing process to a large extent already implemented on 4H-SiC poly-type for the realization of a high signal-to-noise ratio ultraviolet (UV) sensor already commercialized. The results obtained on 6H-SiC prototypes show optimal electrical performance with dark current density lower than 0.2 nA&#x002F;cm<sup>2</sup> at room temperature and 10 V reverse bias. The use of 6H polytype allows shifting of the UV sensor response from 290 nm peak responsivity wavelength measured on standard 4H-SiC photodiodes to 360 nm wavelength in 6H-SiC prototypes with an integrated SiN:H filter exactly in the middle of the UV-A band (320&#x2013;400 nm) with a simultaneous consistent reduction of the optical response in UV-C and UV-B regions below 320 nm wavelength.https://ieeexplore.ieee.org/document/7814212/6H-SiCultraviolet (UV)UV-A sensorSiN:H filterSchottky photodiode.
spellingShingle Antonella Sciuto
Massimo Cataldo Mazzillo
Salvatore Di Franco
Giovanni Mannino
Paolo Badala
Lucio Renna
Corrado Caruso
UV-A Sensor Based on 6H-SiC Schottky Photodiode
IEEE Photonics Journal
6H-SiC
ultraviolet (UV)
UV-A sensor
SiN:H filter
Schottky photodiode.
title UV-A Sensor Based on 6H-SiC Schottky Photodiode
title_full UV-A Sensor Based on 6H-SiC Schottky Photodiode
title_fullStr UV-A Sensor Based on 6H-SiC Schottky Photodiode
title_full_unstemmed UV-A Sensor Based on 6H-SiC Schottky Photodiode
title_short UV-A Sensor Based on 6H-SiC Schottky Photodiode
title_sort uv a sensor based on 6h sic schottky photodiode
topic 6H-SiC
ultraviolet (UV)
UV-A sensor
SiN:H filter
Schottky photodiode.
url https://ieeexplore.ieee.org/document/7814212/
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