Highly enhanced performance of integrated piezo photo-transistor with dual inverted OLED gate and nanowire array channel. (December 2019)

• Record Type: Journal Article
• Authors: Bi, Sheng; Li, Qikun; He, Zhengran; Guo, Qinglei; Asare-Yeboah, Kyeiwaa; Liu, Yun; Jiang, Chengming
• Is Part Of: Nano energy. Volume 66(2019)
• Publication Date: 2019-12
• Subjects: Piezo-phototronic-effect； -- Inverted OLED gate -- Nanowire channel -- Photo-transistor -- Integrated device; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2019.104101
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Piezo-phototronic-effect possesses potential revolutionary applications in optoelectronic systems, malleable optical processing, biomedical diagnostics, and communication. Here, we report a novel structural device, dual piezo photo-transistor (DPPT), based on piezo invert-structured organic light emitting diode (OLED) as gate control and piezo nanowires (NWs) array as charge transport channel to realize tunable photoelectric properties dramatic enhancement achieved by piezo-phototronic-effect in both stimulation gate electrode and the metal-semiconductor-metal channel. Systematic analyses are carried out on electron generated as well as the electric field distribution under various bending/strain direction and degree with the c-direction ZnO NWs grown both vertically and horizontally in OLED gate and NW channel, respectively. The piezo-phototronic transistors under mechanical deformation yield a current on/off ratio of 10 6, more than 80 times higher as compared to the one without deformation. The enhancement of the integrated DPPTs, taking advantage of piezo-phototronic effect, may open up opportunities in innovative applications in various optoelectronic devices and flexible integrated systems. Graphical abstract: Image 1 Highlights: Duel piezo photo-transistor (DPPT) based on piezo invert-structured OLED as gate control and piezo nanowire array as signal channel. Dramatic enhancement is realized by piezo-phototronic-effect in both stimulation gate control and the signal channel. The devices under mechanical deformation yield a current on/off ratio of 10 6, 80 times higher than that without deformation.