Document Details Document Type : Article In Journal  Document Title : Organic photodetector with coumarin-adjustable photocurrent Organic photodetector with coumarin-adjustable photocurrent   Subject : physics  Document Language : English  Abstract : Drop casting technique was used to fabricate Al/p-Si/coumarin doped fullerite/Al diodes. The effects of coumarin doping on the photoresponse properties of the diodes were investigated. The forward bias current of the diodes increases exponentially with voltage confirming rectification behavior. The reverse current of the diodes increases with increasing illumination intensities. The photocurrent of the diodes is higher than the dark current. The obtained m value indicates that the photocurrent exhibited a linear photoconducting behavior. The coumarin doped fullerite diodes indicate a non-ideal behavior with obtained ideality factors. The obtained barrier height value of the Al/p-Si/coumarin doped fullerite/Al diode is comparable to that of the conventional Al/p-Si (phi(b) = 0.58 eV) Schottky diode. The measured values of the capacitance decrease with the increasing frequency. The decrease in capacitance was explained on the basis of interface states. It was concluded that the obtained barrier height and interface state density values of the diode are modified doping fullerite with coumarin. The obtained results suggest that the fabricated diodes could be used as an optical sensor in various optoelectronic applications  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 r.o Ocaya Ocaya, r.o Investigator Doctorate   A.A Al-Ghamdi, Al-Ghamdi, A.A Researcher Doctorate   k Mensah-Darkwa Mensah-Darkwa, k Researcher Doctorate   R.K Gupta, Gupta,, R.K Researcher Doctorate ramguptamsu@gmail.com F Yakuphanoglu Yakuphanoglu, F Researcher Doctorate fyhanoglu@firat.edu.tr Files File Name Type Description  42608.pdf pdf   Back To Researches Page