| 摘要 |
The present invention demonstrates a facile method for the synthesis of tungsten chalcogenide hetero-structured nanomaterials in a colloidal solution process, wherein the tungsten precursor is a tungsten salt, a tungsten complex or a combination thereof, and the chalcogen precursor is a chalcogen element, a chalcogen compound, a chalcogen complex, or a metal chalcogenide. By modifying the reaction conditions as described herein, different forms of tungsten chalcogenide hetero-structured nanomaterials can be produced. The thus obtained nanomaterials may be employed in the economical and environmental friendly fabrication of electronic devices, such as organic photovoltaic devices, field emission transistors, gas sensors, and in particular light emitting diodes. As demonstrated for quantum dot light-emitting diodes, outstanding results with respect to thermal stability, luminescence, brightness, and overall performance can be achieved when replacing materials commonly employed for the assembling of hole transport layers or buffer layers in the fabrication of light-emitting diodes, such as PEDOTPSS, with the tungsten chalcogenide hetero- structured nanomaterials according to the present invention. |
