University of Michigan

Sk Chemicals Co., Ltd.

Industry-Academic Cooperation Foundation, Dankook University

Kyoung Soo Yook

Stephen R Forrest

Brian E Lassiter

Jun Yeop Lee

Byung Doo Chin

Sang Eok Jang

Hyo Suk Son

Soon Ok Jeon

Soon O Jeon

Jun Yeob Lee

There is disclosed ultrathin film material templating layers that force the morphology of subsequently grown electrically active thin films have been found to increase the performance of small molecule organic photovoltaic (OPV) cells. There is disclosed electron-transporting material, such as hexaazatriphenylene-hexacarbonitrile (HAT-CN) can be used as a templating material that forces donor materials, such as copper phthalocyanine (CuPc) to assume a vertical-standing morphology when deposited onto its surface on an electrode, such as an indium tin oxide (ITO) electrode. It has been shown that for a device with HAT-CN as the templating buffer layer, the fill factor and short circuit current of CuPc:C60 OPVs were both improved compared with cells lacking the HAT-CN template. This is explained by the reduction of the series resistance due to the improved crystallinity of CuPc grown onto the ITO surface.

Materials for controlling the epitaxial growth of photoactive layers in photovoltaic devices

The present invention relates to a highly efficient carbazole-based compound and to an organic electroluminescence device including the same. According to the present invention, provided are a compound for an organic electroluminescence device and an organic electroluminescence device including the compound, in which a carbazole-based phosphine oxide compound, which is a compound intended for an organic electroluminescence device, is employed to overcome the problems of conventional compounds for organic electroluminescence devices, i.e. those of instable thermal stability and low efficiency, and particularly, the compound of the present invention exhibits superior efficiency in pure-blue phosphorescent devices.

Highly efficient carbazole-based compound, and organic electroluminescence device comprising same

Growing community of inventors

Yongin-si, South Korea

Kyoung Soo Yook