Polymeric humidity sensor using organic/inorganic hybrid polyelectrolytes

A Solution-Based Temperature Sensor Using the Organic Compound CuTsPc

“…Most reported early studies of organic sensors had the problem of large hysteresis and slow response and recovery times [23–25]. For the sensor presented here, the obtained hysteresis and response/recovery times were a distinct improvement on that reported previously [15]. Figure 6a,b show the hysteresis curves of corresponding resistance and capacitance as a function of temperature variation, respectively.…”

“…The resistivity of the de-ionized water used was 18 MΩ-cm. We observe that the resistance decreased systematically with the increase in temperature, which may be arise from a combination of the changes in the electronic conduction at the electrodes and ionic transport in the solution as a function of temperature [15]. …”

Recent Advances in Hybrid Biomimetic Polymer-Based Films: from Assembly to Applications

“…(C) Spray-assisted LbL assembly: Instead of bringing the substrates' surface into contact with the liquid of the adsorbing species, the liquid is sprayed against the receiving surface of the substrates. Eight multilayer films would be formed by repeating steps (1) Less commonly utilized methods for the fabrication of PE-based layers include surface-initiated polymerization [76], chemical cross-linking [77][78][79], the sol-gel reaction of the copolymers [80][81][82], thermal hydrolysis/condensation reaction [83,84], photopolymerization [85], thermal cross-linking [86][87][88], photothermal reduction lithography [89], and drop-casting [90], either separately or in combination with LbL. For the characterization of the PE-hybrid films, standard spectroscopic techniques are typically used for identification and analysis of organic compounds, like Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) [82], mass spectroscopy (MS), and Raman spectroscopy [72].…”

A reversible and fast-responsive humidity sensor based on a lead-free Cs2TeCl6 double perovskite

“…[16][17][18][19][20][21] The degradation of organic/ inorganic perovskites is determined by the low formation energy and inherent structural instability, which can easily cause crystal structure damage, phase separation, and precipitation of the heavy metal element lead. 22,23 Herein, a full inorganic lead-free and stable Cs 2 TeCl 6 perovskite, which is a vacancy-ordered structure with isolated [TeCl 6 ] 2À octahedral, was explored via a wet-chemical process. Moreover, the Cs 2 TeCl 6 thin film, as a perovskite-based humidity sensor, exhibits a promising humidity detection ability with an outstanding reversible property due to its special structure.…”