Low-energy consumption CuSCN-based ultra-low-ppb level ozone sensor, operating at room temperature

被引：2

作者：

Gagaoudakis, Emmanouil ^{[1
]}

Kampitakis, Viktor ^{[1
,2
]}

Moschogiannaki, Marilena ^{[1
,3
]}

Sfakianou, Angeliki ^{[1
,2
]}

Anthopoulos, Thomas ^{[4
]}

Tsetseris, Leonidas ^{[5
]}

Kiriakidis, George ^{[1
]}

Deligeorgis, George ^{[1
,2
]}

Iacovella, Fabrice ^{[1
]}

Binas, Vasileios ^{[1
,2
]}

机构：

[1] Fdn Res & Technol FORTH IESL, Inst Elect Struct & Laser, Herakle, Greece

[2] Univ Crete, Dept Phys, Iraklion, Greece

[3] Univ Crete, Dept Mat Sci & Technol, Herakle, Greece

[4] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal, Saudi Arabia

[5] Natl Tech Univ Athens, Sch Appl Math & Phys Sci, Dept Phys, GR-15780 Athens, Greece

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2022年 / 338卷

关键词：

Ozone gas sensors; Ultra-low-ppb detection limit; Room temperature; Low-energy consumption; beta-CuSCN sensing element; GAS SENSORS; THIN-FILMS;

D O I：

10.1016/j.sna.2022.113462

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Ozone (O-3) is one of the main indoor as well as environmental air pollutant, thus its detection is of great importance. As a result, plenty of materials have been tested as O-3 gas sensing elements, over the last fifty years. In this work, the gas sensing performance of Copper (I) Thiocyanate (CuSCN) powder against O-3, is presented. The structure of CuSCN powder was polycrystalline as revealed by the X-Ray Diffraction technique, while by employing optical absorption measurement the direct and indirect energy band gaps were calculated and found to be 3.72 eV and 3.48 eV, respectively. CuSCN powder was tested against O-3 at different concentrations, showing a low detection limit of 15 ppb with a response of 1.06, at room temperature (25 degrees C), applying a very low input voltage of 0.1 V. Moreover, the corresponding response and recovery times were 137.4 s and 111 s, respectively, while it can successfully distinguish the different ozone concentrations in less than 20 s. The above mentioned values make CuSCN a possible candidate material for ultra-low O-3 concentration detection, at room temperature, with low-energy consumption.

引用

页数：9