Self-Powered Ultrabroadband Photodetector Monolithically Integrated on a PMN-PT Ferroelectric Single Crystal

Huajing Fang, Chao Xu, Jie Ding, Qiang Li, Jia Lin Sun, Jiyan Dai, Tian Ling Ren, Qingfeng Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

Photodetectors capable of detecting two or more bands simultaneously with a single system have attracted extensive attentions because of their critical applications in image sensing, communication, and so on. Here, we demonstrate a self-powered ultrabroadband photodetector monolithically integrated on a 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3(PMN-28PT) single crystal. By combining the optothermal and pyroelectric effect, the multifunctional PMN-28PT single crystal can response to a wide wavelength range from UV to terahertz (THz). At room temperature, the photodetector could generate a pyroelectric current under the intermittent illumination of incident light in absence of external bias. A systematic study of the photoresponse was investigated. The pyroelectric current shows an almost linear relationship to illumination intensity. Benefiting from the excellent pyroelectric property of PMN-28PT single crystal and the optimized device architecture, the device exhibited a dramatic improvement in operation frequency up to 3 kHz without any obvious degradation in sensitivity. Such a self-powered photodetector with ultrabroadband response may open a window for the novel application of ferroelectric materials in optoelectronics.
Original languageEnglish
Pages (from-to)32934-32939
Number of pages6
JournalACS Applied Materials and Interfaces
Volume8
Issue number48
DOIs
Publication statusPublished - 7 Dec 2016

Keywords

  • ferroelectric
  • photodetector
  • pyroelectric
  • self-powered
  • ultrabroadband

ASJC Scopus subject areas

  • Materials Science(all)

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