title: Porous Organic Polymer Films with Tunable Work Functions and Selective Hole and Electron Flows for Energy Conversions.
abstract: Organic optoelectronics are promising technologies for energy conversion. However, the electrode interlayer, a key material between active layers and conducting electrodes that controls the transport of charge carriers in and out of devices, is still a chemical challenge. Herein, we report a class of porous organic polymers with tunable work function as hole- and electron-selective electrode interlayers. The network with organoborane and carbazole units exhibits extremely low work-function-selective electron flow; while upon ionic ligation and electro-oxidation, the network significantly increases the work function and turns into hole conduction. We demonstrate their outstanding functions as anode and cathode interlayers in energy-converting solar cells and light-emitting diodes.
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan.
authors.forename: Cheng
authors.initials: C
authors.lastname: Gu
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan.
authors.forename: Ning
authors.initials: N
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Youchun
authors.initials: Y
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Shitong
authors.initials: S
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, P.R. China.
authors.forename: Fenghong
authors.initials: F
authors.lastname: Li
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, P.R. China.
authors.forename: Yuguang
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Department of Materials Molecular Science, Institute for Molecular Science, National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki, 444-8787, Japan. jiang@ims.ac.jp, djiang@jaist.ac.jp.|Academic Field of Energy and Environment, School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, 923-1292, Japan. jiang@ims.ac.jp, djiang@jaist.ac.jp.
authors.forename: Donglin
authors.initials: D
authors.lastname: Jiang
keywords: electrode interlayers; energy conversion devices; porous organic polymers; thin films; work function