2024年2月23日 · With increasing size of the Ag2S-ZnS HNSs, PL in both UV/ blue and NIR regions shows a significant quantum size effect with decreased PL intensity and red-shifted PL peaks. The good crystallinity of Ag2S and ZnS and the conjunction interface with few defects also make an important contribution to achieving desirable optical properties of Ag2S ...

2022年1月20日 · Ag 2 S nanoparticles are the staple for high-resolution preclinical imaging and sensing owing to their photochemical stability, low toxicity, and photoluminescence (PL) in the second near-infrared biological window.

2014年2月19日 · Herein, for the first time, the size-dependent excited state optical properties of Ag 2 S QDs are systematically investigated by photoluminescence (PL), PL excitation (PLE), and time-resolved PL spectroscopy. Experimentally, we determine the exciton Bohr radius of Ag 2 S QDs as 2.2 nm, which is highly consistent with theoretical results.

2022年3月18日 · 300-fold photoluminescence (PL) enhancement of Ag2S quantum dots (QDs) is achieved via chloride-mediated growth and passivation, and the PL quantum yield (PLQY) reaches 47.6%. Due to the partial liga...

2020年5月15日 · Ag 2 S and Ag 2 S@ZnS QDs were synthesized first using a microwave method and were examined by means of XRD, TEM and UV–Vis spectroscopy. Then the prepared QDs were applied for the fabrication of QDSCs using a novel drop casting method.

Ag 2 S is a classical semiconductor with the energy bandgap of 0.90–1.10 eV, [51 - 53] which can be utilized as detecting and bioimaging materials operating in the NIR range. Here, we synthesized Ag 2 S-quantum-dot-in-perovskite (Ag 2 S-QDiP) through a laser-assisted inverse temperature crystallization (LA-ITC) method.

2017年2月1日 · 观察到的光致发光 (pl) 归因于 qd 表面上存在配体修饰的 ag2s。因此，在溶液稀释后，pl 强度最初增加然后随后下降，伴随着 pl 光谱的蓝移。pl 现象可归因于稀释后 qd 表面上配体修饰的 ag2s 量的增加，这反过来影响了荧光共振能量转移 (fret) 和表面能级的重新发射。

2023年10月1日 · It is established that the optical properties of PVA films with Ag2S quantum dots smaller than 5 nm have features associated with exciton transitions shifted relative to the edge of the band absorption of bulk silver sulfide, and the energies of these transitions are estimated.

摘要 在聚乙烯吡咯烷酮 (pvp) 存在下，在室温下，十二酸银与硫脲反应 30 min，合成了 ag2s 中空纳米球。通过 x 射线粉末衍射 (xrd)、能量色散 x 射线光谱 (eds)、透射电子显微镜 (tem) 和扫描电子显微镜 (sem) 表征研究表明，制备的产物具有单斜晶结构，由薄壳组成。

2015年11月2日 · The paper presents a review about synthesis and applications of Ag2S nanostructures. As the modern photoelectric and biological materials, Ag2S nanomaterials are potentially useful for both structure and function purposes. Ag2S is a direction narrow band gap semiconductor with special properties.