Jump to main content
Jump to site search


Using a Facile Processing Method to Facilitate Charge Extraction for Polymer Solar Cells

Abstract

It is necessary to carefully adjust the interface characteristics between interlayer and active layer, which is of importance to the facilitated charge extraction and transfer. Here, the post-annealing treatment for the completed device with Ag electrode is used to optimize the interface contact characteristics between WO3 and active layer due to the inter-diffusion of WO3 hole-extraction interface. The strengthened interface contact between them can improve the charge extraction and transfer across the active layer/WO3 interface. Furthermore, a thinner WO3 interlayer (75 Å) is qualified to be an anode interlayer with excellent charge selection, extraction and transport capacities after post-annealing treatment, which is beneficial for the minimized resistance loss introduced by the too thick WO3 and enhanced device performance. As a result, the device with the 75 Å WO3 and 60 °C post-annealing treatment provides a higher fill factor of 74.5% and an optimal device performance of 9.66%. This work reveals a simple and universal method to modulate the interface contact characteristics between evaporated transition metal oxide interlayer and active layer, thus improving the device performance.

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Aug 2018, accepted on 11 Sep 2018 and first published on 13 Sep 2018


Article type: Paper
DOI: 10.1039/C8TC03944E
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
  •   Request permissions

    Using a Facile Processing Method to Facilitate Charge Extraction for Polymer Solar Cells

    W. Guo, C. Liu, D. Zhang, M. Tan, X. Zhang, Z. Li, Y. Zhou, L. Shen and S. Ruan, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC03944E

Search articles by author

Spotlight

Advertisements