Exciton annihilation in photoexcited crystals containing divalent manganese

✍ Scribed by Waldo J. Rodriguez; Roy A. Auerbach; Gary L. McPherson

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 359 KB
• Volume: 132
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(86)87124-x

✦ Synopsis

Luminescence decay curves from undoped crystals of CsMnCla, RbMnCls, RbzMnCl4 and CsMnBrs fit kinetics derived for processes with first-and second-order components. The second-order effects which depend directly on excitation intensity are attributed to exciton annihilation. In contrast, decay curves from crystals of (CH&NMnCls and (CH&NMnBrs where exciton migration is one dimensional show no evidence for annihilation.