Fabrication and Photovoltaic Properties of Organic Solar Cell Based on Zinc Phthalocyanine

• Main Authors: Ul Islam, Zahoor, Tahir, Muhammad, Syed, Waqar Adil, Aziz, Fakhra, Wahab, Fazal, Said, Suhana Mohd, Sarker, Mahidur R., Ali, Sawal Hamid Md, Sabri, Mohd Faizul Mohd
• Format: Article
• Published: MDPI 2020
• Subjects: T Technology (General); TJ Mechanical engineering and machinery; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/36939/

Herein, we report thin films' characterizations and photovoltaic properties of an organic semiconductor zinc phthalocyanine (ZnPc). To study the former, a 100 nm thick film of ZnPc is thermally deposited on quartz glass by using vacuum thermal evaporator at 1.5 x 10(-6) mbar. Surface features of the ZnPc film are studied by using scanning electron microscope (SEM) with in situ energy dispersive x-ray spectroscopy (EDS) analysis and atomic force microscope (AFM) which reveal uniform film growth, grain sizes and shapes with slight random distribution of the grains. Ultraviolet-visible (UV-vis) and Fourier Transform Infrared (FTIR) spectroscopies are carried out of the ZnPc thin films to measure its optical bandgap (1.55 eV and 3.08 eV) as well as to study chemical composition and bond-dynamics. To explore photovoltaic properties of ZnPc, an Ag/ZnPc/PEDOT:PSS/ITO cell is fabricated by spin coating a 20 nm thick film of hole transport layer (HTL)-poly-(3,4-ethylenedioxythiophene) poly(styrene sulfonic acid) (PEDO