ACS Appl Mater Interfaces. 2015 Jul 22;7(28):15314-20. doi: 10.1021/acsami.5b03171. Epub 2015 Jul 10.

Transparent conductive oxide-free perovskite solar cells with PEDOT:PSS as transparent electrode.

ACS applied materials & interfaces

Kuan Sun, Pengcheng Li, Yijie Xia, Jingjing Chang, Jianyong Ouyang

PMID: 26132334 DOI: 10.1021/acsami.5b03171

Abstract

UNLABELLED: Perovskite solar cells (PSCs) have been attracting considerable attention because of their low fabrication cost and impressive energy conversion efficiency. Most PSCs are built on transparent conductive oxides (TCOs) such as fluorine-doped tin oxide (FTO) or indium tin oxide (ITO), which are costly and rigid. Therefore, it is significant to explore alternative materials as the transparent electrode of PSCs. In this study, highly conductive and highly transparent poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (

PEDOT: PSS) films were investigated as the transparent electrode of both rigid and flexible PSCs. The conductivity of

PEDOT: PSS films on rigid glass or flexible poly(ethylene terephthalate) (PET) substrate is significantly enhanced through a treatment with methanesulfonic acid (MSA). The optimal power conversion efficiency (PCE) is close to 11% for the rigid PSCs with an MSA-treated

PEDOT: PSS film as the transparent electrode on glass, and it is more than 8% for the flexible PSCs with a MSA-treated

PEDOT: PSS film as the transparent electrode on PET. The flexible PSCs exhibit excellent mechanical flexibility in the bending test.

Keywords: PEDOT:PSS; flexible solar cell; interface engineering; perovskite solar cell; transparent electrode

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't