Organic retinomorphic sensors are particularly effective for motion detection, offering the advantage of in-sensor processing that can remove repetitive static backgrounds. In this study, we investigate the important impact of high-k dielectrics in promoting charge accumulation to increase the intrinsic photo-response of photo-sensitive capacitors within this promising framework. We demonstrate a retinomorphic sensor array to detect the motion of a sample moving at different speeds and directions. These proof-of-concept results represent a promising advance toward scalable integration of organic retinomorphic arrays to meet the growing demand for more efficient motion tracking systems.
This talk will present the designs of polymeric upconversion imagers that combine photo-sensing and display in a compact structure, to enable infrared visualization to 1300 nm. The organic photodetectors are further improved by incorporating a new heterojunction interlayer to trigger trap-assisted photomultiplication. The interlayer served to suppress the dark current and enhance the photoresponse. The large active area of 2 square cm enabled demonstrations such as object inspection, imaging through smog, and concurrent recording of blood vessel location and blood flow pulses.
Low-cost sensors for in situ monitoring of ocean conditions will provide critical information to understand how nutrients and oxygen levels correlate to fish kills and aquaculture issues. The compatibility of organic electrochemical transistors (OECTs) with aqueous environments makes them promising sensor components in an ocean sensing platform. Our OECTs is based on PEDOT as channel and carbon as electrodes. Here we design the sensor for detecting dissolved oxygen (DO) and explain the challenges in balancing the oxygen reduction reaction with the doping/dedeoping process in OECTs. We will show the device sensitivity and stability with respect to DO concentration under simulated marine environment.
Low-cost, compact sensor systems for in-situ monitoring of marine conditions will provide critical information to understand how pollution and oxygen levels correlate to fish kills and aquaculture issues. The compatibility of organic electrochemical transistors (OECTs) with aqueous environments makes them promising sensor components in an ocean-sensing platform. This presentation will discuss the development of dissolved oxygen (DO) sensors, which has a detection limit to 3 ppm as required in marine studies. The challenges in balancing the oxygen reduction reaction with the doping/dedeoping process in OECTs will be shown and mitigated by using multiple voltage rails. The DO sensor will be used in conjunction with pH ion-selective transistors, to provide multi-modal measurements that assess how these parameters correlate to water quality. We will show the device sensitivity and stability under simulated marine environment.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.