Improved hydrogen sensing behaviour in ion-irradiated Pd-Au alloy thin films

被引:28
作者
Deepti [1 ]
Kumar, Hardeep [2 ]
Tripathi, Ambuj [3 ]
Dey, Arka Bikash [4 ]
Gupta, Mukul [5 ]
Krishna, Richa [6 ]
Avasthi, D. K. [6 ]
机构
[1] Amity Univ, Amity Inst Appl Sci, Noida 201303, Uttar Pradesh, India
[2] Natl Inst Technol Uttarakhand, Dept Sci & Humanities, Srinagar 246174, Garhwal, India
[3] Inter Univ Accelerator Ctr, Mat Sci Div, Aruna Asaf Ali Marg, New Delhi 110067, India
[4] Saha Inst Nucl Phys, Surface Phys & Mat Sci Div, Kolkata 700064, India
[5] UGC DAE Consortium Sci Res, Univ Campus,Khandwa Rd, Indore 452001, Madhya Pradesh, India
[6] Amity Univ, Amity Inst Nanotechnol, Noida 201303, Uttar Pradesh, India
关键词
Pd-Au alloy thin film; DC magnetron co-sputtering; Synchrotron XRD; Ion irrdiation; Hydrogen sensing; PARTS-PER-MILLION; LATTICE-CONSTANTS; NANOSTRUCTURED PD; PHASE-TRANSITIONS; PALLADIUM; GAS; SENSORS; SOLUBILITY; PRESSURE; SWITCHES;
D O I
10.1016/j.snb.2019.127006
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Present work reports a significant improvement in the hydrogen sensing characteristics of Pd-Au thin film by ion irradiation. The Pd-Au alloy thin film was synthesized by DC magnetron sputtering. The deposited film was irradiated by 500 keV Xe (2+) ion at a fluence of 1 x 10(16) ions/cm(2). The characterizations of the pristine and irradiated samples were performed by XRD, AFM and TEM. The hydrogen sensing characteristics of the pristine and irradiated samples was carried out by electrical resistance measurements using 2% H-2 concentration at 250 degrees C. The alloy film does not delaminate in hydrogen loading/deloading cycles. The improvement in sensing characteristics is attributed to ion irradiation induced defects which facilitate the rate of hydrogen absorption in the films.
引用
收藏
页数:7
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