Document Details Document Type : Article In Journal  Document Title : New photodiodes based graphene-organic semiconductor hybrid materials New photodiodes based graphene-organic semiconductor hybrid materials   Subject : physics  Document Language : English  Abstract : New photodiodes based graphene-organic semiconductor hybrid materials were fabricated for the first time using sol-gel spin coating technique. The current-voltage characteristics of the Au/GO:coumarin/p- Si/Al diodes were investigated under dark and various illumination intensities. The various junction parameters of the diodes were determined using I-V,C-V and transient characteristics. The transient photocurrent measurements indicate that Au/GO:coumarin/p-Si/Al diodes are very sensitive to illumination and the precise responsivity of the diodes is tunable by adjusting GO:coumarin fraction. The capacitance-voltage-frequency (C-V-f) measurements indicate that the capacitance of the diodes depends on voltage and frequency. The capacitance decreases with increasing frequency due to a continuous distribution of the interface states. The ability to tune the photosensitivity in the photoconductive mode through graphene oxide:coumarin weight ratio has been shown to lead to a near constant sensitivity to illumination for a weight ratio of 0.03GO. The obtained results suggest that Au/GO: coumarin/p-Si/Al diodes can be used as a photosensor in optic communications  ISSN : 0379-6779  Journal Name : SYNTHETIC METALS  Volume : 213  Issue Number : 1  Publishing Year : 1437 AH 2016 AD  Article Type : Article  Added Date : Monday, August 14, 2017  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email A Mekki Mekki, A Investigator Doctorate   r.o Ocaya Ocaya, r.o Researcher Doctorate   A Dere Dere, A Researcher Doctorate   A.A Al-Ghamdi, Al-Ghamdi, A.A Researcher Doctorate   k Harrabi Harrabi, k Researcher Doctorate   F Yakuphanoglu Yakuphanoglu, F Researcher Doctorate fyhan@hotmail.com Files File Name Type Description  42607.pdf pdf   Back To Researches Page