Transparent Organic Upconversion Devices for Near‐Infrared Sensing
- 12 December 2014
- journal article
- research article
- Published by Wiley in Advanced Materials
- Vol. 27 (7), 1217-1222
- https://doi.org/10.1002/adma.201404355
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.Keywords
Funding Information
- Ministry of Science and Technology (102-3113-E-001-001, 102-2627-E-002-002, 102-2221-E-131-026-MY2, 102-2221-E-131-030-MY2, 102-2221-E-011-142, 102-2622-E-011-018-CC3, 103-ET-E-011-004-ET)
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