ZnO polymer composite based visible blind UV photo detector
| Autor: | Sachindranath Das, Uttam Kumar Ghorai, Swagatalaxmi Pujaru, Apurba Ray, Radhaballabh Bhar, Subhasish Patra, Atanu Roy, Priyabrata Sadhukhan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Photocurrent Materials science business.industry Mechanical Engineering Composite number Photodetector Nanoparticle 02 engineering and technology Dielectric Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry Photosensitivity Mechanics of Materials Optoelectronics General Materials Science 0210 nano-technology Luminescence business |
| Zdroj: | Materials Research Bulletin. 101:240-245 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2018.01.041 |
| Popis: | Spherical ZnO nanoparticles with average diameter ∼50 nm are synthesized by hydrothermal method. Composites of the nanoparticles with different polymers have been prepared and UV detection properties are measured. The dielectric medium perturbs electron-phonon interaction as well as the optoelectronic properties. Moreover, the luminescence properties of the materials effected due to composite formation. In case of NP-polymer composite NPs are capped and there is negligible further adsorption and desorption of O2 molecules occurred on the surface. This increases the photocurrent as well as photosensitivity. For ZnO based photo detector, there is a small but not negligible photo response near 620 nm. The photo response in this particular wavelength is not observed in case of ZnO-PVP composite and it can be used as visible blind UV detector. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect