Development and characterization of screen-printed Prosopis Africana char thick film for electronic applications by Babani, Suleiman, Hamidon, Mohd Nizar, Ismail, Alyani, Jaafar, Haslina, Hassan, Intan Helina, Shafiee, Farah Nabilah, Yunusa, Zainab, Lamido, Jamila, Bakar, Azlinda Abu, Lawal, Ismail, Shitu, Ibrahim Garba