A New Type of Explosive Chemical Detector Based on an Organic Photovoltaic Cell

Advances in Organic and Perovskite Photovoltaics Enabling a Greener Internet of Things

“…On another instance, an explosive chemicals detector based on OPVs was demonstrated, where upon exposure to certain chemicals the V OC increases, namely its operation is not based in the change of the device resistance as other common chemical sensors. [ 269 ] A novel device concept was reported by Choi et al., where an OPV was used in optically active structures. [ 270 ] The authors demonstrated a flexible pressure sensor by incorporating a microporous elastomer with a piezotransmittance and an organic solar cell and showcased its application in a prosthetic robot finger.…”

New Alternating Current Noise Analytics Enables High Discrimination in Gas Sensing

“…Gas sensors are widely used for environment monitoring, industrial control, food engineering, safety, and other applications due to the ability of detecting and discriminating target gases. In general, most approaches focused on the optimization of materials, device structures, and physical parameters to improve the gas sensing performance. − We have previously reported results of chemical sensors with a focus on different materials and device designs. − Simulation and modeling from materials to devices to smart systems have also been proposed and studied for the application of chemical sensors. − Recently, there is an increasing interest in developing feature analytics in the design and application of chemical sensors to enhance the performance, accompanying with the emerging machine learning and big-data approaches. − In this regard, we have previously studied the transient feature analysis based on exponential fitting to achieve high accuracy of discrimination in chemical detection …”