“…The surface research of SERS-active semiconductor nanomaterials can be traced back to the 1980s. 53,116,117 After decades of development, more and more semiconductor materials have been reported to exhibit SERS enhancement, including a variety of inorganic semiconductors (e.g., metal oxides, 47,[118][119][120][121][122] metal sulfides, [123][124][125][126][127][128] metal selenides, [129][130][131] metal tellurides, [132][133][134] metal halides, [135][136][137][138] and Si, 139,140 ) and a small number of organic semiconductors (e.g., α,ω-diperfluorohexylquaterthiophene 141 ). In the meantime, the EFs of these semiconductors have improved from less than 10 3 to the EF value (10 5 -10 7 ) equivalent to gold and silver nanostructures.…”