Photochemistry of semiconductor colloids. Size quantization effects in Q-cadmium arsenide

✍ Scribed by A. Fojtik; H. Weller; A. Henglein

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 200 KB
• Volume: 120
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(85)80553-4

✦ Synopsis

Extremely small partrcles or Cd,As, were prrpdrsd a collolds ,n aqueous soluuon and m the sohd srate While mncrocryslallme Cd,As, IS almost a melal absorbmg m the rar-mlrared (band gap = 0 1 eV) Ihe small par~rcles have abhorpuons and fluorescences m the wslble or near-mrrared dependmg on the parwle sne The sohd parllcles can be rcdlssol\ed unhout change m we and are pholoanodlcally decomposed m the Presence ol aw Methyl tlologen is reduced by xlslble hghl m the presence of small (Te LX nm dlamc~er) pnrt~clrs of Cd3As2, lha reducrmn bang enhanced by cxccss arsme Methyl wologen qucnchcs the lluorcxcnce and promow the pholoanodlc dlssoluuon of the parrnzles