Department of Physics, Engineering Physics & Astronomy

Department of Physics, Engineering Physics & Astronomy
Department of Physics, Engineering Physics & Astronomy

Visualization of electrochemical doping and light-emitting junction formation in conjugated polymer films

Dr. Jun Gao
Department of Physics, Queen's University

Wednesday, November 5, 2003
10:30 AM @ Stirling 501

Abstract:

In this talk I will describe the direct imaging of in situ electrochemical doping and light-emitting junction formation in conjugated polymer films. This work is based on a massive planar device structure we recently achieved (pLEC) at Queen's, which can have an interelectrode spacing 500 times larger than any other organic light-emitting devices. The extra-large pLECs we imaged (up to 10 mm interelectrode spacing) are by far the largest solid-state light-emitting devices ever created. The imaging of these devices directly confirmed the operating mechanism of polymer light-emitting electrochemical cells (LECs), which has been a subject of debate. In addition, it offers a unique and direct approach for polymer device and material research.