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Structural modulation of core‐shell silver nanoclusters from the inside is a huge challenge but of great importance in their syntheses. Herein, two silver nanoclusters [Ag3S9@Ag42] (SD/Ag45b) and [Ag9S9@Ag42] (SD/Ag51a) are isolated in the presence of different kinds of sulfonic acids. Uniquely, SD/Ag45b and SD/Ag51a show typical core‐shell structures with the similar Ag42 shell but different cores...
A novel two‐side‐activatable high‐performance surface‐enhanced Raman spectroscopy (SERS) substrate is developed based on the tape‐imprinting method. It features 3D full‐space‐distributed hot spots originating from the hierarchical lotus seedpod‐like silver arrays, which offer ultrasensitive, uniform, reproducible, and reliable quantitative measurements with an inherent internal standard. This excellent...
Photodetectors with high photoelectronic gain generally require a high negative working voltage and a very low environment temperature. They also exhibit low response speed and narrow linear dynamic range (LDR). Here, an organic photodiode is demonstrated, which shows a large amount of photon to electron multiplication at room temperature with highest external quantum efficiency (EQE) from ultraviolet...
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