Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (6): 1193-1198.doi: 10.1007/s40242-013-3122-7

• Articles • Previous Articles     Next Articles

Characterization and Properties of a New Amorphous Small-molecule Material Containing Both Donor andAcceptor Moieties for Photovoltaic Application

ZHAO Yang1, ZHANG Feng-ling2, ZHANG Ming1, MA Yu-guang1   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China;
    2. Biomolecular and Organic Electronics, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden
  • Received:2013-03-18 Revised:2013-04-11 Online:2013-12-01 Published:2013-05-24
  • Contact: ZHANG Ming E-mail:zhming@jlu.edu.cn
  • Supported by:

    Supported by the National Basic Research Program of China(No.2009CB939701), the National Natural Science Foundation of China(Nos.20704015, 50973041) and the Project of Swedish Research Council(VR).

Abstract:

A new amorphous small-molecule material, in which the electron-donating carbazole units are connected to the backbone by flexible side chains, has been synthesized and utilised in the photovoltaic(PV) field. This material exhibits the amorphous feature, higher thermal stability and good film forming ability. The influence of the heat-treatment on the morphology and the performance of PV devices were studied. Eventually, a relatively high photovoltaic conversion efficiency was achieved. At the same time, the PV device displayed an ideal open-circuit voltage(over 1 V) which is very close to the upper limit of its theoretical value.

Key words: Amorphous material, Donor-acceptor bonding, Photovoltaic device