Optical sensors based on the NiPc–CoPc composite films deposited by drop casting and under the action of centrifugal force
Fatima Noshin1, Ahmed Muhammad M1, Karimov Khasan S2, 3, Ahmad Zubair4, †, Muhammad Fahmi Fariq5, 6
       

(color online) (a) Schematic diagram of the drop casting and centrifugal deposition, (b) ceramic alumina substrate with surface type of silver electrodes. Molecular structures of organic semiconductor NiPc (c) and CoPc (d).