Charge-transfer type luminescence of Yb3+ ions in LuPO4 and YPO4

✍ Scribed by Eiichiro Nakazawa

• Publisher: Elsevier Science
• Year: 1978
• Tongue: English
• Weight: 296 KB
• Volume: 56
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(78)80210-3

✦ Synopsis

Braad band emission which bas two peaks at 290 nm and 420 nm was observed in Yb3+-activated LuP04 and YPO4. It is shown that thïs emission is due to a charge-transfer type transition, i.e. the reverse process of the charge-transfer absorption of Yb3+ ions It is well known that some of the transition-metal and lanthanide ions in crystals and solutions show broad absorption bands in the W regïon due to a transition caused by the transfer of an electron from a ligand to the incomplete f or d shell of the ions. This kind of transition is called charge-transfer absorption (CT absorption).