All ink-jet printed polyfluorene photosensor for high illuminance detection
نویسندگان
چکیده
An all-printed photosensor based on polyfluorene derivatives has been developed for high illuminance range detection (>100 klux). The active layer is a blend of hole-accepting poly(9,9’-dioctylfluorene-cobis-N,N’-(4-butylphenyl)-bis-N,N’-phenyl-1,4-phenylenediamine) (PFB) and electron-accepting poly(9,9’-dioctylfluorene-co-benzothiadiazole) (F8BT). A top-absorbing architecture was used with poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) as the transparent electrode. The surface energy of the PEDOT:PSS ink was modified in order to allow printing directly onto the hydrophobic surface of the PFB:F8BT blend layer, placing the transparent electrode at the top of the light sensor structure. The all-printed photosensor shows a linear response over multiple measurements within the illuminance range of (100 to 400) klux. *[email protected] + Current address: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA 94720-1770, USA.
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تاریخ انتشار 2011