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) Normalized impedance versus light intensity, and (b) normalized capacitance versus light intensity.