The Effects of Improved Photoelectric Properties of PEDOT:PSS by Two-Step Treatments on the Performance of Polymer Solar Cells Based on PTB7-Th:PC(71)BM

Ling Zhao; Suling Zhao; Zheng Xu; Di Huang; Jiao Zhao; Yang Li; Xurong Xu

doi:10.1021/acsami.5b09561

The Effects of Improved Photoelectric Properties of PEDOT:PSS by Two-Step Treatments on the Performance of Polymer Solar Cells Based on PTB7-Th:PC(71)BM

ACS Appl Mater Interfaces. 2016 Jan 13;8(1):547-52. doi: 10.1021/acsami.5b09561. Epub 2015 Dec 28.

Authors

Ling Zhao^{1

2}, Suling Zhao^{1

2}, Zheng Xu^{1

2}, Di Huang^{1

2}, Jiao Zhao^{1

2}, Yang Li^{1

2}, Xurong Xu^{1

2}

Affiliations

¹ Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education , Beijing, 100044, China.
² Institute of Optoelectronics Technology, Beijing Jiaotong University , Beijing, 100044, China.

PMID: 26675336
DOI: 10.1021/acsami.5b09561

Abstract

In this paper, we present a smart two-step treated method to simultaneously improve the work function, conductivity, and transmittance of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (

Pedot: PSS). With the two-step treated

Pedot: PSS, the short-circuit current density of polymer solar cells (PSCs) based on PTB7-Th:PC71BM increases from 13.41 to 22.10 mA/cm(2), and the power conversion efficiency increases from 7.35% to 9.82% with 33% improvement. The underlying mechanisms on performance improvement of PSCs can be summarized as follows: (1) two-step treated

Pedot: PSS with the improved work function and the conductivity, which contributes significantly to the charge collection of PSCs; and (2) two-step treated

Pedot: PSS with higher transmittance, which is of benefit to the light absorption of the active layer in PSCs.

Keywords: PEDOT:PSS; conductivity; transmittance; two-step treated method; work function.

Publication types

Research Support, Non-U.S. Gov't