Porous Organic Polymer Films with Tunable Work Functions and Selective Hole and Electron Flows for Energy Conversions. Issue 9 (28th January 2016)

• Record Type: Journal Article
• Authors: Gu, Cheng; Huang, Ning; Chen, Youchun; Zhang, Huanhuan; Zhang, Shitong; Li, Fenghong; Ma, Yuguang; Jiang, Donglin
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 9(2016)
• Page Start: 3049
• Page End: 3053
• Publication Date: 2016-01-28
• Subjects: electrode interlayers -- energy conversion devices -- porous organic polymers -- thin films -- work function; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201510723
• Languages: English
• ISSNs: 1433-7851

Abstract

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. Abstract : Nanofilters for electrons and holes : Porous organic polymer films were designed to have tunable work functions, and were used to control selective hole and electron flows to achieve high‐ efficiency energy conversions, including solar cells and light‐emitting diodes.