Document Type

Journal Article

Department/Unit

Department of Physics

Title

Performance enhancement in inverted polymer solar cells incorporating ultrathin Au and LiF modified ZnO electron transporting interlayer

Language

English

Abstract

The performance enhancement of inverted polymer solar cells (PSCs), based on the blend system of regioregular poly(3-hexylthiophene) and [6,6]-phenyl C61-butyric acid methylester, due to incorporating ultrathin Au and LiF interlayer between the front transparent indium tin oxide and a ZnO electron transporting layer was analyzed. The results reveal that a 40% increase in PCE, e.g., from 2.62% to 3.67%, was observed for PSCs made with an optimal Au/LiF interlayer as compared to the one having a bare ZnO electron transporting layer. The presence of Au/LiF-modified ZnO interlayer between ITO and the organic layer helps to improve the charge collection. The absorption enhancement arising from the plasmon resonance of Au nanostructures also contributed to the improvement in PCE. It is shown that PSCs with LiF incorporated ZnO electron transporting layer allow improving cell lifetime, demonstrating <50% decrease in PCE compared to that of the ones with a bare ZnO interlayer after 240 day aging test for cells without encapsulation in air.

Keywords

Inverted polymer solar cells, Plasmon resonance, Au nanostructures, Lifetime

Publication Date

2015

Source Publication Title

Organic Electronics

Volume

17

Start Page

364

End Page

370

Publisher

Elsevier

DOI

10.1016/j.orgel.2014.12.032

Link to Publisher's Edition

http://dx.doi.org/10.1016/j.orgel.2014.12.032

ISSN (print)

15661199

ISSN (electronic)

18785530

This document is currently not available here.

Share

COinS