Abstract
A solid polythiophene pellet was ablated by a KrF excimer laser beam to deposit thin films on silicon substrates. The laser-ablated plasma was studied by optical emission spectroscopy to identify the photon-breaking of C-S bonds in the ablated heterocycles. The selective photon-induced bond breaking was also supported by Raman and X-ray photoelectron spectroscopy measurements of the deposited thin films. The thin films appeared to be composed of cubic nanocrystals with an uniform size of 240 nm. X-ray diffraction measurement determined the cubic crystal structures with a lattice constant of a = 3.38 Å and suggested a quasi-one-dimensional carbon chain structure along the body diagonal of the cube.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 35-38 |
| Number of pages | 4 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4426 |
| DOIs | |
| State | Published - 2002 |
| Externally published | Yes |
| Event | Second International Symposium on Laser Precision Microfabrication - Singapore, Singapore Duration: May 16 2001 → May 18 2001 |
Keywords
- Carbon
- Carbon chain
- Cubic nanocrystal
- One-dimensional
- Photon bond-breaking
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering