Uma Devi Godavarti, P. Nagaraju, Vijayakumar Yelsani, Yamuna Pushukuri, P. S. Reddy, Madhavaprasad Dasari. Synthesis and characterization of ZnS-based quantum dots to trace low concentration of ammonia[J]. Journal of Semiconductors, 2021, 42(12): 122901
- Journal of Semiconductors
- Vol. 42, Issue 12, 122901 (2021)
Fig. 1. (Color online) X-ray diffraction pattern of ZnS and cobalt-doped ZnS quantum dots.
Fig. 2. SEM images of (a) ZnS, (b) 0.05 at.% cobalt doped ZnS quantum dots, (c) 0.25 at.% cobalt doped ZnS quantum dots.
Fig. 3. TEM images of (a) ZnS, (b) 0.05 at.% cobalt-doped ZnS quantum dots (c) 0.25 at.% cobalt-doped ZnS quantum dots.
Fig. 4. (Color online) EDX spectra of (a) ZnS quantum dots, (b) 0.05 at.% cobalt doped ZnS quantum dots, and (c) 0.25 at.% cobalt-doped ZnS quantum dots.
Fig. 5. FTIR spectra of (a) ZnS quantum dots, (b) 0.05 at.% cobalt doped ZnS quantum dots, and (c) 0.25 at.% cobalt-doped ZnS quantum dots.
Fig. 6. Gas sensing setup.
Fig. 7. (Color online) Response of pure and cobalt-doped ZnS quantum dots towards 50 ppm ammonia.
Fig. 8. (Color online) Transient response curves (a) pure ZnS (b) 0.05 at.% of cobalt-doped ZnS quantum dots (c) 0.25 at.% of cobalt-doped ZnS quantum dots.
|
Table 1. Structural properties of pure and cobalt-doped ZnS quantum dots.
|
Table 2. Comparison table of gas sensing properties different materials towards ammonia.
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20