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Title: A water-processable organic electron-selective layer for solution-processed inverted organic solar cells

Abstract

A triazine- and pyridinium-containing water-soluble material of 1,1′,1″-(4,4′,4″-(1,3,5-triazine-2,4,6-triyl)tris(benzene-4,1-diyl)) tris(methylene)tripyridinium bromide (TzPyBr) was developed as an organic electron-selective layer in solution-processed inverted organic solar cells due to its strong anti-erosion capacity against non-polar organic solvents commonly used for the active layer. Ohmic-like contact with the adjacent active materials like fullerene derivatives is speculated to be formed, as confirmed by the work-function measurements with scanning Kelvin probe and ultraviolet photoelectron spectroscopy techniques. Besides, considering the deep highest occupied molecular orbital energy level of TzPyBr, excellent hole-blocking property of the electron-selective layer is also anticipated. The inverted organic photovoltaic devices based on the TzPyBr/ITO (indium tin oxide) bilayer cathode exhibit dramatically enhanced performance compared to the control devices with bare ITO as the cathode and even higher efficiency than the conventional type devices with ITO and Al as the electrodes.

Authors:
; ; ; ; ; ;  [1]
  1. State Key Laboratory of Luminescent Materials and Devices (South China University of Technology) and Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640 (China)
Publication Date:
OSTI Identifier:
22283216
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BENZENE; BROMIDES; CATHODES; CHANNELING; COMPARATIVE EVALUATIONS; ELECTRONS; ENERGY LEVELS; FULLERENES; HOLES; INDIUM COMPOUNDS; LAYERS; MOLECULAR ORBITAL METHOD; ORGANIC SOLAR CELLS; ORGANIC SOLVENTS; PHOTOELECTRON SPECTROSCOPY; PHOTOVOLTAIC EFFECT; TIN OXIDES; ULTRAVIOLET RADIATION; WATER; WORK FUNCTIONS

Citation Formats

Chen, Dongcheng, Zhou, Hu, Cai, Ping, Sun, Shi, Ye, Hua, Su, Shi-Jian, and Cao, Yong. A water-processable organic electron-selective layer for solution-processed inverted organic solar cells. United States: N. p., 2014. Web. doi:10.1063/1.4864622.
Chen, Dongcheng, Zhou, Hu, Cai, Ping, Sun, Shi, Ye, Hua, Su, Shi-Jian, & Cao, Yong. A water-processable organic electron-selective layer for solution-processed inverted organic solar cells. United States. https://doi.org/10.1063/1.4864622
Chen, Dongcheng, Zhou, Hu, Cai, Ping, Sun, Shi, Ye, Hua, Su, Shi-Jian, and Cao, Yong. Mon . "A water-processable organic electron-selective layer for solution-processed inverted organic solar cells". United States. https://doi.org/10.1063/1.4864622.
@article{osti_22283216,
title = {A water-processable organic electron-selective layer for solution-processed inverted organic solar cells},
author = {Chen, Dongcheng and Zhou, Hu and Cai, Ping and Sun, Shi and Ye, Hua and Su, Shi-Jian and Cao, Yong},
abstractNote = {A triazine- and pyridinium-containing water-soluble material of 1,1′,1″-(4,4′,4″-(1,3,5-triazine-2,4,6-triyl)tris(benzene-4,1-diyl)) tris(methylene)tripyridinium bromide (TzPyBr) was developed as an organic electron-selective layer in solution-processed inverted organic solar cells due to its strong anti-erosion capacity against non-polar organic solvents commonly used for the active layer. Ohmic-like contact with the adjacent active materials like fullerene derivatives is speculated to be formed, as confirmed by the work-function measurements with scanning Kelvin probe and ultraviolet photoelectron spectroscopy techniques. Besides, considering the deep highest occupied molecular orbital energy level of TzPyBr, excellent hole-blocking property of the electron-selective layer is also anticipated. The inverted organic photovoltaic devices based on the TzPyBr/ITO (indium tin oxide) bilayer cathode exhibit dramatically enhanced performance compared to the control devices with bare ITO as the cathode and even higher efficiency than the conventional type devices with ITO and Al as the electrodes.},
doi = {10.1063/1.4864622},
url = {https://www.osti.gov/biblio/22283216}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 5,
volume = 104,
place = {United States},
year = {2014},
month = {2}
}