https://scholars.lib.ntu.edu.tw/handle/123456789/442986
標題: | Transparent, Wearable, Broadband, and Highly Sensitive Upconversion Nanoparticles and Graphene-Based Hybrid Photodetectors | 作者: | Kataria, M. et al. Yadav, K. Haider, G. Liao, Y.M. Liou, Y.-R. Cai, S.-Y. Lin, H.-I. Chen, Y.H. Paul Inbaraj, C.R. Bera, K.P. Lee, H.M. YIT-TSONG CHEN Wang, W.-H. YANG-FANG CHEN |
公開日期: | 2017 | 卷: | 3 | 期: | 4 | 起(迄)頁: | 2336-2347 | 來源出版物: | ACS Photonics | 摘要: | Numerous investigations of photon upconversion in lanthanide-doped upconversion nanoparticles (UCNPs) have led to its application in the fields of bioimaging, biodetection, cancer therapy, displays, and energy conversion. Herein, we demonstrate a new approach toward lanthanide-doped UCNPs and a graphene hybrid planar and rippled structure photodetector. The multi-energy sublevels from the 4fn electronic configuration of lanthanides results in longer excited state lifetime for photogenerated charge carriers. This opens up a new regime for ultra-high-sensitivity and broadband photodetection. Under 808 nm infrared light illumination, the planar hybrid photodetector shows a photoresponsivity of 190 AW-1, which is higher than the currently reported responsivities of the same class of devices. Also, the rippled graphene and UCNPs hybrid photodetector on a poly(dimethylsiloxane) substrate exhibits an excellent stretchability, wearability, and durability with high photoresponsivity. This design makes a significant contribution to the ongoing research in the field of wearable and stretchable optoelectronic devices. ? 2018 American Chemical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/442986 | DOI: | 10.1021/acsphotonics.8b00141 | SDG/關鍵字: | Electromagnetic wave attenuation; Energy conversion; Excited states; Nanoparticles; Optoelectronic devices; Photodetectors; Photons; Rare earth elements; Wearable technology; Broadband response; Electronic configuration; Excited state lifetimes; Hybrid photo detectors; Lanthanide-doped upconversion nanoparticles; Photogenerated charge carriers; Rippled graphene; Upconversion nanoparticles; Graphene |
顯示於: | 物理學系 |
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