5 documents found, page 1 of 1
Ultra-sensitive, self-powered, CMOS-compatible near-infrared photodetectors for...
Silva, Nuno E.; Jayakrishnan, Ampattu R.; Kaim, Adrian; Gwozdz, Katarzyna; Domingues, Leonardo; Kim, J. S.; Istrate, Marian C.; Ghica, CorneliuSelf-powered near-infrared (NIR) photodetectors are essential for surveillance systems, sensing in IoT electronics, facial recognition, health monitoring, optical communication networks, night vision, and biomedical imaging. However, silicon commercial detectors need external power to operate and cooling to suppress large dark currents. This work demonstrates a new class of CMOS-compatible self-powered NIR phot...
Ferroelectric effect in oxide based pyro-phototronic photodetector
Kaim, Adrian; Gwóźdź, Katarzyna; Vieira, E. M. F; Silva, José Pedro BastoGrowing number of photodetectors in use might require sheer amounts of energy to power them and in order to prevent that, studies on self-powered detectors are gaining more popularity. A common approach synergistically couples multiple effects, to combine all of their advantages. In this work we attempt to refine characteristics of a pyro-phototronic device, based on Si/SnOx/ZnO heterojunction, by the introduct...
High-performance and self-powered visible light photodetector using multiple co...
Silva, José Pedro Basto; Vieira, Eliana M F; Gwozdz, Katarzyna; Silva, Nuno E; Kaim, Adrian; Istrate, Marian C; Ghica, Corneliu; Correia, José HIn this work, we demonstrate, for the first time, that coupling together the pyroelectric effect, the photovoltaic effect and the plasmonic effect is a novel method to significantly enhance the performance of self-powered photodetectors in the visible region. Photodetectors based on tri-layered heterojunction of n-Si/p-SnO/n-ZnO through the inclusion of silver (Ag) nanoparticles (NPs) at the SnO/ZnO interface w...
Disentangling the role of the SnO layer on the pyro-phototronic effect in ZnO-b...
Vieira, E. M. F; Silva, José Pedro Basto; Gwozdz, Katarzyna; Kaim, Adrian; Gomes, Nuno M.; Chahboun, Adil; Gomes, M. J. M.; Correia, José H.Self-powered photodetectors (PDs) have been recognized as one of the developing trends of next-generation optoelectronic devices. Herein, it is shown that by introducing a thin layer of SnO film between the Si substrate and the ZnO film, the self-powered photodetector Al/Si/SnO/ZnO/ITO exhibits a stable and uniform violet sensing ability with high photoresponsivity and fast response. The SnO layer introduces a ...
High-performance self-powered photodetectors achieved through the pyro-phototro...
Silva, José Pedro Basto; Vieira, E. M. F; Gwozdz, Katarzyna; Kaim, Adrian; Gonçalves, L. M.; MacManus-Driscoll, Judith L.; Hoye, Robert L. Z.Coupling together the pyroelectric effect and the photovoltaic effect is a novel method to significantly enhance the performance of photodetectors. In this work, we make use of this effect through a tri-layered heterojunction of n-Si/p-SnOx/n-ZnO, which takes advantage of the pyroelectric properties of the n-type ZnO film and the photovoltaic response of the n-type Si/p-type SnOx heterojunction. The photo-respo...