Self-Powered Broadband Photodetector and Sensor Based on Novel Few-Layered Pd3(PS4)2 Nanosheets
Autor: | Petr Marvan, Pradip Kumar Roy, Vlastimil Mazánek, Evgeniya Kovalska, David Sedmidubský, Daniel Bouša, Zdeněk Sofer, Nikolas Antonatos |
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Rok vydání: | 2021 |
Předmět: |
Materials science
business.industry Photodetector 02 engineering and technology Photodetection Specific detectivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Exfoliation joint 0104 chemical sciences Nanomaterials Responsivity Photocatalysis Optoelectronics General Materials Science 0210 nano-technology business Ultrashort pulse |
Zdroj: | ACS Applied Materials & Interfaces. 13:30806-30817 |
ISSN: | 1944-8252 1944-8244 |
Popis: | Optoelectronics and sensing devices are of enormous importance in our modern lives, which has propelled the scientific community to explore new two-dimensional (2D) nanomaterials to meet the requirements of future devices. Herein, we present the exfoliation of palladium thiophosphate (Pd3(PS4)2) by mechanical shear force exfoliation. The Pd3(PS4)2-based photoelectrochemical (PEC) device demonstrated self-powered broadband photodetection in the range of 385-940 nm with an unprecedented responsivity of 2 A W-1 and a specific detectivity of about 8.67 × 1011 cm Hz1/2 W-1 under the illumination of 420 nm LED light. The crucial parameters such as photoresponsivity, response, and recovery time of the device can be controlled by an externally applied voltage and the analyte concentration. Moreover, Pd3(PS4)2-based vapor-sensing devices exhibited frequency-dependent selective acetone sensing in the presence of other organic vapors with an ultrafast response and a recovery time of less than 1 s. Finally, the photocatalytic activity of Pd3(PS4)2 was revealed, which can be attributed to the presence of an appropriate band alignment with the catalytic activity of Pd. This novel material with the aforementioned fascinating phenomenon will pave the way toward practical future applications in optoelectronics and sensing. |
Databáze: | OpenAIRE |
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