Controlling responsivity depends on change of interdigital electrodes in planar MgZnO UV photodetectors. (March 2018)

• Record Type: Journal Article
• Authors: Zhang, Wei; Jiang, Dayong; Guo, Zexuan; Yang, Xiaojiang; Hu, Nan; Duan, Yuhan; Gao, Shang; Liang, Qingcheng; Zheng, Tao; Lv, Jingwen
• Is Part Of: Superlattices and microstructures. Volume 115(2018)
• Page Start: 177
• Page End: 182
• Publication Date: 2018-03
• Subjects: MgZnO film -- Schottky junctions -- Depletion width -- Parallel electrodes; Superlattices as materials -- Periodicals; Microstructure -- Periodicals; Semiconductors -- Periodicals; Superréseaux -- Périodiques; Microstructure (Physique) -- Périodiques; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.spmi.2018.01.030
• Languages: English
• ISSNs: 0749-6036

Abstract

Abstract: In this work, the responsivity-controlled high performance UV photodetectors fabricated from MgZnO films was investigated with an emphasis on the effect of varying the number of interdigitated electrode pairs. The responsivity of MgZnO photodetectors was optimized by increasing the number of interdigital electrode pairs at a given bias. The result is due to the parallel structure of the interdigital electrodes and the depletion width of the Schottky junctions. This demonstrates a straightforward way of tailoring the responsivity of UV photodetectors for practical applications. Highlights: MgZnO UV PDs were fabricated by the radio frequency magnetron sputtering. Varying numbers of interdigital electrode pairs were designed to control the responsivity. The parallel effect and the depletion width were used to interpret the characteristic.