Separation of Electrical and Optical Energy Gaps: Selectively Adjusting the Electrical and Optical Properties for a Highly Efficient Blue Emitter
作者:He Liu、Ping Chen、Dehua Hu、Xiangyang Tang、Yuyu Pan、Huanhuan Zhang、Wenqiang Zhang、Xiao Han、Qing Bai、Ping Lu、Yuguang Ma
DOI:10.1002/chem.201304544
日期:2014.2.17
The design concept of separation of optical and electrical bandgap for wide bandgap materials is further developed in DCzSiPI. The HOMO/LUMO levels can be tuned by incorporation of PI and DCz substituents. The tetraphenylsilane core avoids the intramolecular charge transfer from DCz to PI (DCz=dimer carbazole, PI=phenanthro[9,10‐d]imidazole). The allowed transitions are found to be from HOMO−1 to LUMO
DCzSiPI进一步开发了分离宽带隙材料的光电带隙的设计理念。HOMO / LUMO的水平可以通过掺入PI和DCz取代基来调节。四苯基硅烷核避免了分子内电荷从DCz转移到PI(DCz =二聚咔唑,PI =菲咯啉[9,10- d ]咪唑)。发现允许的过渡是从HOMO-1到LUMO,从而为DCzSiPI提供了足够的带隙。