Fabrication, carrier transport mechanisms and photovoltaic properties of Au/silicon phthalocyanine dichloride/p-Si/Al heterojunction device

This research paper aims to study the carrier transport mechanisms and photovoltaic properties of the SiPcCl 2 thin film. To achieve this, Au/silicon phthalocyanine dichloride (SiPcCl 2 )/p-Si/Al heterojunction device was prepared. The heterojunction microelectronic parameters such as ideality factor, m and reverse current I s were estimated at room temperature and found to be 6.77 and 408 nA respectively. The series resistance R s of the fabricated device was also calculated. Two mechanisms were deduced in SiPcCl 2 /p-Si according to the voltage range. The results revealed that the height of effective barrier φ bi is clearly increased from 0.71 to 0.80 eV. Moreover, the photovoltaic properties of Au/SiPcCl 2 /p-Si/Al cell were studied under illumination such as the short circuit current, I sc , open circuit voltage, V oc , maximum current I M , maximum voltage, V M , filling factor FF and power conversion efficiency, η were measured to be 0.59 mA, 0.47 V, 0.44 mA, and 0.24 V, 0.40 and 3.7% respectively. The topographical properties of the SiPcCl 2 thin film deposited on the flat glass substrate were investigated using atomic force microscope method.