A saturated red color converter for visible light communication using a blend of star-shaped organic semiconductors
Abstract
We report a study of blends of semiconducting polymers as saturated red color converters to replace commercial phosphors in hybrid LEDs for visible light communication (VLC). By blending two star-shaped organic semiconductor molecules, we found a near complete energy transfer (> 90% efficiency) from the green-emitting truxene-cored compound T4BT-B to the red-emitting boron dipyrromethene (BODIPY) cored materials. Furthermore, we have demonstrated the capability of these materials as fast color converters for VLC by measuring their intrinsic optical modulation bandwidth and data rate. The measured 3 dB modulation bandwidth of blends (~55 MHz) is more than 10 times higher than commercially available LED phosphors and also higher than the red-emitting BODIPY color converter alone in solution. The data rate achieved with this blend is 20 times higher than measured with a commercially available phosphor based color converter.
Citation
Sajjad , M T , Manousiadis , P , Orofino , C , Kanibolotsky , A , Findlay , N , Rajbhandari , S , Vithanage , C D A , Chun , H , Faulkner , G , O'Brien , D , Skabara , P , Turnbull , G A & Samuel , I D W 2017 , ' A saturated red color converter for visible light communication using a blend of star-shaped organic semiconductors ' , Applied Physics Letters , vol. 110 , no. 1 , 013302 . https://doi.org/10.1063/1.4971823
Publication
Applied Physics Letters
Status
Peer reviewed
ISSN
0003-6951Type
Journal article
Description
Authors would like to acknowledge the EPSRC for financial support for the UP-VLC (EP/K00042X/1). PJS and IDWS also acknowledge Royal Society Wolfson Research Merit Awards.Collections
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