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Enhancement in photodetection properties of Ag/CdS/Ag devices through novel rare-earth metal Tb doping
- Source :
- Materials Letters. 285:129174
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Herein, the effect of Terbium (Tb) doping on the photodetection properties of Ag/CdS/Ag devices have been elucidated. An enhancement in the photodetector performance was noted for Ag/Tb@CdS/Ag device in terms of amplified sensitivity of 592, improved responsivity of 3.64 A/W, and excellent detectivity of 6.39 × 1012 Jones in compared to pure Ag/CdS/Ag device with respective values of 192, 0.24 A/W and 7.98 × 1011 Jones. Moreover, the Tb-doped device exhibits a faster response time of 30 ms as compared to 421 ms for device with pure CdS. The enhancement in photodetector performance was explained through the change in conduction mechanism from Schottky in Ag/CdS/Ag to ohmic in Ag/Tb@CdS/Ag device.
- Subjects :
- Materials science
Photodetector
chemistry.chemical_element
Terbium
02 engineering and technology
Photodetection
010402 general chemistry
01 natural sciences
Metal
Responsivity
General Materials Science
Ohmic contact
business.industry
Mechanical Engineering
Doping
Schottky diode
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
chemistry
Mechanics of Materials
visual_art
visual_art.visual_art_medium
Optoelectronics
0210 nano-technology
business
Subjects
Details
- ISSN :
- 0167577X
- Volume :
- 285
- Database :
- OpenAIRE
- Journal :
- Materials Letters
- Accession number :
- edsair.doi...........610bdf78e43815a9b5a4eb57d48588f0