Phys. Rev. B 56, 6689–6697 (1997)Persistent photoconductivity at elevated temperatures in Cd1-xMnxTe:InReceived 23 December 1996; published in the issue dated 15 September 1997 Persistent photoconductivity measurements have been made on several samples of Cd1-xMnxTe:In with manganese concentrations in the range 5–15 %. The effect of composition on the persistent photoconductivity (PPC) effect has been studied. The PPC is usually quenched at a temperature of about 100 K but some samples exhibit PPC which exists up to 190 K. The origin of this effect is discussed in terms of several models of PPC. Particular attention is paid to the various possibilities for multiple DX-like centers in these materials. Also, a small number of samples have been identified as being possible candidates for being driven through the insulator-metal transition via photodoping. One possible application of these samples (which has already been suggested) would be to write erasable conductive, or even metallic, patterns on an insulating background. The requirements for this area of application are discussed in order to ascertain whether Cd1-xMnxTe:In is a suitable material. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.56.6689
DOI:
10.1103/PhysRevB.56.6689
PACS:
72.20.-i, 72.40.+w, 71.55.Gs, 72.80.Ey
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.