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http://hdl.handle.net/10397/65655
Title: | Self-powered ultrabroadband photodetector monolithically integrated on a PMN-PT ferroelectric single crystal | Authors: | Fang, H Xu, C Ding, J Li, Q Sun, JL Dai, JY Ren, TL Yan, Q |
Keywords: | Ferroelectric Photodetector Pyroelectric Self-powered Ultrabroadband |
Issue Date: | 2016 | Publisher: | American Chemical Society | Source: | ACS applied materials and interfaces, 2016, v. 8, no. 48, p. 32934-32939 How to cite? | Journal: | ACS applied materials and interfaces | 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. | URI: | http://hdl.handle.net/10397/65655 | ISSN: | 1944-8244 | EISSN: | 1944-8252 | DOI: | 10.1021/acsami.6b10305 |
Appears in Collections: | Journal/Magazine Article |
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