A signal-off photoelectrochemical sandwich-type immunosensor based on WO3/TiO2 Z-scheme heterojunction. - Pei, Fubin; Feng, Shasha; Hu, Wei; Hao, Qingli; Liu, Bing; Mu, Xihui; Lei, Wu; Tong, Zhaoyang (Microchimica Acta, 2023)