Abstract
We report the formation and ultraviolet (UV) photodetection of single-crystalline spherical ZnO particles by pulsed laser irradiation of commercial ZnO nanoparticles in water. The phase and microstructure analysis before and after laser irradiation reveals a crystal size increase and shape transformation from irregular to spherical. Time-dependent laser irradiation confirmed that fusion is the reason for nanoparticle growth up to single-crystalline spherical particles. After rapid cooling, they maintain size and shape and possess unique optical and electrical properties. Because of the single-crystalline feature and smooth surfaces, high and selective sensing of ultraviolet light is observed.
| Original language | English |
|---|---|
| Pages (from-to) | 2241-2247 |
| Number of pages | 7 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 6 |
| Issue number | 4 |
| DOIs | |
| State | Published - 26 Feb 2014 |
| Externally published | Yes |
Keywords
- photodetection
- pulsed laser irradiation
- single crystalline
- spherical particles
- ZnO
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