Bhaumik, Saikat ; Ghosh, Batu ; Pal, Amlan J. (2011) Color tunable light-emitting diodes based on copper doped semiconducting nanocrystals Applied Physics Letters, 99 (8). 083106. ISSN 0003-6951
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Official URL: http://apl.aip.org/resource/1/applab/v99/i8/p08310...
Related URL: http://dx.doi.org/10.1063/1.3626855
Abstract
We have introduced copper-doped semiconducting nanocrystals in light-emitting diodes (LEDs). Characteristics of the devices show that electroluminescence (EL) emission in these LEDs is color tunable. In copper-doped ZnS nanocrystals in the core and Zn1-xCdxS host as a shell-layer, photoluminescence (PL) arises from a transition from conduction band-edge of the host to 3d-levels of copper-ions. The PL of the nanocrystals and hence the EL of LEDs based on such nanostructures become tunable by varying the Cd-content in Zn-Cd-S alloys, that is, Zn1-xCdxS with different values of x, which changes the conduction band-edge of the host.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Cadmium Alloys; Copper; Electroluminescence; Light Emitting Diodes; Nanostructured Materials; Photoluminescence; Semiconductor Doping; Zinc Alloys; Zinc Compounds |
| ID Code: | 65806 |
| Deposited On: | 19 Oct 2011 07:25 |
| Last Modified: | 19 Oct 2011 07:25 |
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