Arredondo, BelénDios, Cristina deVergaz, RicardoPozo, Gonzalo delRomero, Beatriz2014-02-032014-02-032012http://hdl.handle.net/10115/12032An organic bulk heterojunction photodetector (OPD) is fabricated on the basis of a blend of poly(3-hexyl thiophene):1-(3-methoxycarbonyl)-propyl-1-1-phenyl-(6,6) C61. The OPD responsivity is calculated from current density-voltage characteristic (J-V) under green-LED illumination obtaining 1 A/W. Frequency response at different biases is measured, which shows a high ¿3-dB cutoff frequency of 343 kHz at ¿3 V. Impedance measurements are carried out at different reverse biases, and the results are fitted with a small signal equivalent circuit. The device cutoff frequency (fc) can be estimated with the parameters extracted from this circuit obtaining good agreement between measured and calculated fc.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/Bulk heterojunction, cutoff frequency, impedance spectroscopy, organic photodetector.info:eu-repo/semantics/article10.1109/LPT.2012.2217488info:eu-repo/semantics/openAccess3307 Tecnología Electrónica3306.02 Aplicaciones Eléctricas