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🔓 Açık Erişim YÖKSİS Eşleşti
Nanostructured MoS<inf>2</inf> and WS<inf>2</inf> Photoresponses under Gas Stimuli
Nanomaterials · Ekim 2022
YÖKSİS Kayıtları
Nanostructured MoS2 and WS2 Photoresponses under Gas Stimuli
NANOMATERIALS · 2022 SCI-Expanded
PROFESÖR ŞULE ATEŞ →
Makale Bilgileri
DergiNanomaterials
Yayın TarihiEkim 2022
Cilt / Sayfa12
Scopus ID2-s2.0-85140748673
Erişim🔓 Açık Erişim
Özet
This study was on the optoelectronic properties of multilayered two-dimensional MoS2 and WS2 materials on a silicon substrate using sputtering physical vapor deposition (PVD) and chemical vapor deposition (CVD) techniques. For the first time, we report ultraviolet (UV) photoresponses under air, CO2, and O2 environments at different flow rates. The electrical Hall effect measurement showed the existence of MoS2 (n-type)/Si (p-type) and WS2 (P-type)/Si (p-type) heterojunctions with a higher sheet carrier concentration of 5.50 × 105 cm−2 for WS2 thin film. The IV electrical results revealed that WS2 is more reactive than MoS2 film under different gas stimuli. WS2 film showed high stability under different bias voltages, even at zero bias voltage, due to the noticeably good carrier mobility of 29.8 × 102 cm2/V. WS2 film indicated a fast rise/decay time of 0.23/0.21 s under air while a faster response of 0.190/0.10 s under a CO2 environment was observed. Additionally, the external quantum efficiency of WS2 revealed a remarkable enhancement in the CO2 environment of 1.62 × 108 compared to MoS2 film with 6.74 × 106. According to our findings, the presence of CO2 on the surface of WS2 improves such optoelectronic properties as photocurrent gain, photoresponsivity, external quantum efficiency, and detectivity. These results indicate potential applications of WS2 as a photodetector under gas stimuli for future optoelectronic applications.
Yazarlar (9)
1
Mohamed A. Mohamed
ORCID: 0000-0001-8473-8253
2
Shrouk E. Zaki
3
Nada Alfryyan
4
Mohammed Tihtih
ORCID: 0000-0001-7364-9036
5
Yasin Eker
6
Gamal F. Attia
ORCID: 0000-0001-9837-7460
7
Mucahit Yilmaz
8
Şule Ateş
9
Mohamed Shaban
ORCID: 0000-0002-4368-8269
Anahtar Kelimeler
MoS 2
optoelectronics
thin film
two-dimensional material
WS 2
Kurumlar
Faculty of Sciences
Beni Suef Egypt
Islamic University of Madinah
Medina Saudi Arabia
Miskolci Egyetem
Miskolc Hungary
National Research Centre
Giza Egypt
Necmettin Erbakan Üniversitesi
Meram Turkey
Princess Nourah Bint Abdulrahman University
Riyadh Saudi Arabia
Selçuk Üniversitesi
Selçuklu Turkey
Solar and Space Research Department
Helwan Egypt
Metrikler
12
Atıf
9
Yazar
5
Anahtar Kelime