Abstract
Ultraviolet and visible dual-wavelength photosensing was observed using inorganic–organic Schottky junction. Photodetectors were fabricated by depositing dimethyl sulfoxide-modified poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) conducting polymer on CdS-decorated Al-doped ZnO nanorod arrays. A prominent dual-wavelength photosensitivity was observed at λ ≈ 380 nm and λ ≈ 500 nm with fast response and recovery time (∼20 ms) even at zero external bias. The maximum device performance was obtained at −5.0 V external bias with external quantum efficiency ≈ 55 864% and ∼12 590%; responsivity (Rλ) ≈ 171 and 50 A/W; detectivity (Dλ) ≈ 2.6 × 1011 and 7.7 × 1010 jones, corresponding to the wavelengths ∼380 and 500 nm, respectively. To protect from ambient atmosphere and moisture environment, the device was sealed with polydimethylsiloxane (PDMS) polymer. PDMS-encapsulated device demonstrated excellent photosensing behavior under water environment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
