title: Transparent organic upconversion devices for near-infrared sensing.
abstract: Transparent organic upconversion devices are shown in a night-vision demonstration of a real object under near-infrared (NIR) illumination in the dark. An extraordinarily high current gain - reflecting the on-off switching effect - greater than 15 000 at a driving voltage of 3 V is demonstrated, indicating the high sensitivity to NIR light and potential of using the proposed upconverter in practical applications. A maximum luminance exceeding 1500 cd m(-2) at 7 V is achieved. Unlike previous studies, where 2D aperture projection is reported, the current study shows 3D images of real objects under NIR illumination in the dark.
authors.affiliation: Department of Electronic Engineering, Ming Chi University of Technology, No. 84, Gungjuan Rd., New Taipei City, 24301, Taiwan.
authors.forename: Shun-Wei
authors.initials: SW
authors.lastname: Liu
authors.forename: Chih-Chien
authors.initials: CC
authors.lastname: Lee
authors.forename: Chih-Hsien
authors.initials: CH
authors.lastname: Yuan
authors.forename: Wei-Cheng
authors.initials: WC
authors.lastname: Su
authors.forename: Shao-Yu
authors.initials: SY
authors.lastname: Lin
authors.forename: Wen-Chang
authors.initials: WC
authors.lastname: Chang
authors.forename: Bo-Yao
authors.initials: BY
authors.lastname: Huang
authors.forename: Chun-Feng
authors.initials: CF
authors.lastname: Lin
authors.forename: Ya-Ze
authors.initials: YZ
authors.lastname: Lee
authors.forename: Tsung-Hao
authors.initials: TH
authors.lastname: Su
authors.forename: Kuan-Ting
authors.initials: KT
authors.lastname: Chen
keywords: near-infrared; organic electronics; sensing; transparent materials; upconversion