A Model on the Mn2+ Luminescence Band Redshift with Mn(II) Doping and Aggregation within CdS:Mn Microwires

作者：Muhammad, Arshad Kamran; Zhang Yong-You; Liu Rui-Bin^*; Shi Li-Jie; Zou Bing-Suo

来源：Chinese Physics Letters, 2014, 31(6): 067802.

DOI：10.1088/0256-307X/31/6/067802

• MAGNETIC SEMICONDUCTORS
• EXCHANGE
• POLARON

We report the microphoto-luminescence band redshifts with individual and multi-Mn(II) ion emissions within CdS microwires. The localized exciton magnetic polarons (LEMPs) corresponding to the d-d. optical transitions of Mn(II) account for this shift. This LEMP emission from the double-, three-and four-Mn(II) ions with ferromagnetic coupling after photoexcitation can happen in diluted magnetic semiconductors, except for the individual Mn(II) doping. In addition, a simple spin-exchange polaronic model is established to account for these emission peaks well. Through this model, we can verify the local geometry of the Mn(II) ions in CdS microwires.

• 出版日期2014-6
• 单位北京理工大学