Highly sensitive, low-voltage, organic photomultiple photodetectors exhibiting broadband response

Fang-Chung Chen*, Shang Chieh Chien, Guan Lin Cious

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

Highly sensitive polymer photodetectors exhibiting broad spectral responses, ranging from the ultraviolet to the near-infrared (NIR) region, are obtained after incorporating an organic NIR dye into the device active layer. As a result, high external quantum efficiencies (>7000%) and high responsivities (32.4 A/W) are achieved at an extremely low operating voltage (-1.5 V). The high photomultiplation could be attribute to trapping of electrons, originating from the photogenerated electron/hole pairs, at the dye molecules, which effectively facilitates hole injection from the external circuit. The device preparation scheme presented herein opens up the possibility fabricating lost-cost, flexible organic photodetectors.

Original languageEnglish
Article number103301
JournalApplied Physics Letters
Volume97
Issue number10
DOIs
StatePublished - 6 Sep 2010

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