TRIPHENYLAMINE DERIVATIVES AND ORGANIC PHOTOVOLTAIC CELLS INCLUDING THE DERIVATIVES
申请人:KOREA INSTITUTE OF SCIENCE AND TECHNOL
公开号:US20130234075A1
公开(公告)日:2013-09-12
Disclose is a triphenylamine derivative with a low band gap. The triphenylamine derivative is represented by Formula (I):
wherein R
1
and Ar are as defined in the specification. Further disclosed is a highefficiency organic photovoltaic cell using the derivative.
Synthesis of a novel small molecule accepter with perylenediimide linked through thiophene ring with triphenylamine is described. Introducing thiophene unit leads to extending the molecular absorption spectrum to the range of 330 nm–700 nm. The molecule showed the lowest unoccupied molecular orbital level (LUMO) of −3.80 eV and the highest occupied molecular orbital level (HOMO) of −5.60 eV. The X-ray