Author(s): Li, QC (Li, Qicong); Sun, Y (Sun, Yang); Yang, C (Yang, Cheng); Liu, K (Liu, Kong); Islam, MR (Islam, Md Rasidul); Li, L (Li, Long); Wang, ZJ (Wang, Zhijie); Qu, SC (Qu, Shengchun)
Source: SCIENCE BULLETIN Volume: 65 Issue: 9 Pages: 747-752 DOI: 10.1016/j.scib.2019.12.021 Published: MAY 15 2020
Abstract: For the state-of-the-art organic solar cells (OSCs), PEDOT:PSS is the most popularly used hole transport material for the conventional structure. However, it still suffers from several disadvantages, such as low conductivity and harm to ITO due to the acidic PSS. Herein, a simple method is introduced to enhance the conductivity and remove the additional PSS by water rinsing the PEDOT:PSS films. The photovoltaic devices based on thewater rinsed PEDOT:PSS present a dramatic improvement in efficiency from 15.98% to 16.75% in comparison to that of the untreated counterparts. Systematic characterization and analysis reveal that although part of the PEDOT:PSS is washed away, it still leaves a smoother film and the ratio of PEDOT to PSS is higher than before in the remaining films. It can greatly improve the conductivity and reduce the damage to substrates. This study demonstrates that finely modifying the charge transport materials to improve conductivity and reduce defeats has great potential for boosting the efficiency of OSCs. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
Accession Number: WOS:000528833400010
ISSN: 2095-9273
eISSN: 2095-9281
Full Text: https://www.sciencedirect.com/science/article/pii/S2095927319307200?via%3Dihub