We have demonstrated a Cu2O/ZnO nanorods (NRs) array p-n heterostructures photoelectrochemical biosensor. The electrodeposition of Cu2O at pH 12 acquired the preferably (111) lattice planes, resulting in the largest interfacial electric field between Cu2O and ZnO, which finally led to the highest separation efficiency of photogenerated charge carriers. High verticality ZnO nanorods by seed layer and thermal annealing assist the hydrothermal growth. The optimized Cu2O/ZnO NRs array p-n heterostructures exhibited enhanced PEC performance, such as elevated photocurrent and photoconversion efficiency, as well as excellent sensing performance for the sensitive detection of four strains of different races and different degree of cancer cell which made the device self-powered. We got spectral response characteristics and operating wavelength range of biosensor, and to verify the biological characteristics of cancer cells wafer react with different stages of cancer characterized by a cancer measured reaction experiment.
Chao-Hsin Hsu, Cheng-Hsun Chu, Weichung Chen, I-Chen Wu, Ming Tsang Wu, Chie-Tong Kuo, Raymond Chien-Chao Tsiang, and Hsiang-Chen Wang, "Detection of esophageal cancer cell by photoelectrochemical Cu2O/ZnO biosensor
(Conference Presentation)," Proc. SPIE 9725, Frontiers in Biological Detection: From Nanosensors to Systems VIII, 972504 (Presented at SPIE BiOS: February 14, 2016; Published: 27 April 2016); https://doi.org/10.1117/12.2212073.4848770202001.
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