公开(公告)号：US20190219750A1

公开(公告)日：2019-07-18

申请号：US16324362

申请日：2017-07-28

Applicant: Cambridge Display Technology Limited ,  Sumitomo Chemical Company Limited

Inventor： Jeremy Burroughes ,  Andrew Lee ,  Jonathan Behrendt

IPC: G02B5/22 ,  G01N21/64

CPC classification number: G02B5/223 ,  G01N21/645 ,  G01N2021/6471 ,  G02B5/22

Abstract: A sensor comprising a light source (103); a photodetector (105); a sample receptacle such as a microfluidic device (101) between the light source and the photodetector; and one or both of a first light filter (107) and a second light filter (109) wherein the first light filter is provided between the sample receptacle and the photodetector and the second light filter is provided between the sample receptacle and the light source. The first light filter may comprise tartrazine. The second light filter may comprise Coomassie violet R200, Victoria Blue B or acid fuchsin. In use, light hν1 emitted from the light source is absorbed by a luminescent indicator in the sample receptacle which then emits light hν2 detected by the photodetector.

公开(公告)号：US20180284021A1

公开(公告)日：2018-10-04

申请号：US15764537

申请日：2016-09-29

Applicant: Cambridge Display Technology Limited

Inventor： Jeremy Burroughes ,  Richard J. Wilson ,  Andrew Lee

IPC: G01N21/64 ,  G02B5/22 ,  G02B5/20

Abstract: Fluorescence-based sensors having favourably low detection limits and high sensitivity are disclosed. The sensors comprise one or more solution processable colour filters that are used together with organic LEDs and photodiodes. The colour filters are used to narrow the wavelength range of the OLED emission and/or to reject any light from reaching the photodiode which is not from analyte fluorescence, thereby enhancing the device sensitivity.