Please use this identifier to cite or link to this item: 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
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