A novel method for preparing microcrystalline films from the amorphous phase by shot-like IR laser light irradiation
✍ Scribed by Kondo, S. ;Saito, T.
- Book ID
- 105362914
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 328 KB
- Volume
- 202
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Abstract
A novel method is presented for preparing microcrystalline films of metal halide semiconductors. The method is based on fast crystallization and subsequent crystal growth of amorphous films by means of shot‐like IR laser light irradiation and includes in situ monitoring of exciton luminescence. It is possible to prepare high‐quality microcrystalline films at various size levels of the crystallites. There is an optimum size level at which the microcrystalline films show much stronger free‐exciton luminescence than polycrystalline films and bulk single crystals (as exemplified for CuCl and CsPbCl~3~). The microcrystalline films provide extremely densely dispersed nanoparticles for studying mesoscopic enhancement of linear and nonlinear optical properties at various particle size levels. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)