Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (7): 1413-1420.doi: 10.3866/PKU.WHXB201505142

• PHOTOCHEMISTRY AND RADIATION CHEMISTRY • Previous Articles     Next Articles

Influence of Electrode Interfacial Buffer Layers on Thermal Stability of P3HT:PC61BM Solar Cells

WU Na1,2, LUO Qun1, WU Zhen-Wu1, MA Chang-Qi1   

  1. 1 Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics, Collaborative Innovation Center of Suzhou Nano Science and Technology, Chinese Academy of Science, Suzhou 215123, Jiangsu Province, P. R. China;
    2 Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, Jiangsu Province, P. R. China
  • Received:2015-02-12 Revised:2015-05-13 Published:2015-07-08
  • Contact: LUO Qun, MA Chang-Qi;
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (61306073, 91123034) and Jiangshu Provincial Natural Science Foundation, China (BK20130346).


The high-temperature thermal stability of solution-processed polymer solar cells is a key issue that determines the feasibility of further thermal encapsulation processes, such as thermal lamination or hightemperature atomic layer deposition. In this article, polymer solar cells with poly(3, 4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS) or MoO3 as the anode buffer layer (ABL) and ZnO or LiF as the cathode buffer layer (CBL) were fabricated with a device structure of indium tin oxide (ITO)/ABL/poly(3-hexylthiophene): phenyl- C61- butyric acid methyl ester (P3HT:PC61BM)/CBL/Al. Device performances, especially the hightemperature thermal stability of the devices, were studied in detail. The results indicated that the thermal stability of the organic solar cells was highly dependent on the buffer layer material. Devices with MoO3 as ABL and ZnO as CBL showed high thermal stability at a temperature of 120-150 ℃, which ensures the possibility of subsequent thermal processing. In addition, the use of ZnO as the cathode buffer layer could also improve longterm device stability.

Key words: Polymer solar cell, Thermal stability, Metal oxide nanoparticle, Electrode buffer layer