Thermally stable and flexible paper photosensors based on 2D BN nanosheets
Tsai, M. L.
Zhou, L. H.
Jang, S. H.
Hu, L. B.
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
KAUST Solar Center (KSC)
Physical Sciences and Engineering (PSE) Division
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AbstractThe market for printed and flexible electronics, key attributes for internet of things, is estimated to reach $45 billion by 2016 and paper-based electronics shows great potential to meet this increasing demand due to its popularity, flexibility, low cost, mass productivity, disposability, and ease of processing . In the family of flexible electronics, solarblind deep ultraviolet (DUV) photodetectors (PDs) can be widely applied in wearable applications such as military sensing, automatization, short-range communications security and environmental detection . However, conventional flexible devices made of paper and plastic substrates are expected to have thermal issues due to their poor thermal conductivity. For instance, conventional paper has a very low thermal conductivity of 0.03 W/mK as that of plastic is 0.23 W/mK. As a result, it is required to increase the thermal conductivity of the substrates used for flexible electronics. In this work, we present flexible DUV paper PDs consisting of 2D boron nitride nanosheets (BNNSs) and ID nanofibrillated celluloses (NFCs) with good detectivity (up to 8.05 × 10 cm Hz/W), fast recovery time (down to 0.393 s), great thermal stability (146 W/m K, 3-order-of-magnitude larger than conventional flexible substrates), high working temperature (up to 200 °C), excellent flexibility and bending durability (showing repeatable ON/OFF switching during 200-time bending cycles), which opens avenues to the flexible electronics.
CitationLin CH, Cheng B, Tsai ML, Fu HC, Luo W, et al. (2017) Thermally stable and flexible paper photosensors based on 2D BN nanosheets. 2017 IEEE International Electron Devices Meeting (IEDM). Available: http://dx.doi.org/10.1109/IEDM.2017.8268353.
SponsorsThis work was financially supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-3005), KAUST solar center (FCC/1/3079-08-01), and KAUST baseline funding.
Conference/Event name63rd IEEE International Electron Devices Meeting, IEDM 2017