Various
hybrid zero-dimensional/two-dimensional (0D/2D) systems have been
developed to fabricate phototransistors with better performance compared
to two-dimensional (2D) layered materials as well as broaden potential
applications. Herein, we integrated environment-friendly InP@ZnS core–shell
QDs with high efficiency of light absorption and light-emitting properties
with bilayer MoS2 for the realization of 0D/2D mixed-dimensional
phototransistors. Interdigitated (IDT) electrodes with Pt-patterned
arrays, acting as light collectors as well as plasmonic resonators,
can further enhance light harvesting from the InP@ZnS-MoS2 hybrid phototransistors, contributing to achieving a photoresponsivity
as high as 1374 A·W–1. Moreover, thanks to
the asymmetric Pt/MoS2 Schottky junction at the source/drain
contact, a self-powered characteristic with an ultrafast speed of
21.5 μs was achieved, which is among the best performances for
2D layered material-based phototransistors. In terms of these features,
we demonstrated the artificial synapse network with short-time plasticity
based on the self-powered photodetection device. Our work reveals
the great potential of 0D/2D hybrid phototransistors for high-response,
ultrafast-speed, and self-powered photodetectors coupled with artificial
neuromorphic function.
A novel strategy was proposed to enhance the sinterability and electrical properties of BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ (BZCY) proton-conducting electrolyte by adding 10 wt.% La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3-δ (LSGM) to form a 90 wt.% BZCY-10 wt.% LSGM (BL91) composite electrolyte. XRD patterns showed that no reaction occurred between How to cite this article: Yu S, Wang Z, Yang L, et al. Enhancing the sinterability and electrical properties of BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ proton-conducting ceramic electrolyte.
Fuel electrode-supported tubular protonic ceramic cells (FETPCCs) based on the BaZr0.4Ce0.4Y0.15Zn0.05O3−δ (BZCYZ) membrane electrolyte was fabricated through a two-step method, in which the polyporous electrode-support tube was prepared with a traditional slip casting technique in a plaster mold, and the BZCYZ membrane was produced by a dip-coating process on the outside surface of the electrode-support tube. The dense thin-film electrolyte of BZCYZ with a thickness of ~25 μm was achieved by cofiring the fuel electrode support and electrolyte membrane at 1450 °C for 6 h. The electrochemical performances of the FETPCCs were tested under different solid oxide cell modes. In protonic ceramic fuel cell (PCFC) mode, the peak power densities of the cell reached 151–191 mW·cm−2 at 550–700 °C and exhibited relatively stable performance during continuous operation over 100 h at 650 °C. It was found that the major influence on the performance of tubular PCFC was the resistance and cathode current collectors. Additionally, in protonic ceramic electrolysis cell (PCEC) mode, the current densities of 418–654 mA·cm−2 were obtained at 600–700 °C with the applied voltage of 2.0 V when exposed to 20% CO2–80% H2 and 3% H2O/air. Using distribution of relaxation time analysis, the electrolytic rate-limiting step of the PCEC model was determined as the adsorption and dissociation of the gas on the electrode surface.
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