Reviving near infra‐red emission of Ag2S nanoparticles using interfacial defects in the Ag2S@CdS core–shell structure
作者： M. Karimipour , L. Izadian , M. Molaei
DOI: 10.1002/BIO.3402
关键词:
摘要: Ag2S@CdS core–shell particles were synthesized with different Cd source content as a measure of shell thickness using pulsed microwave irradiation method. The verified structurally X-ray diffraction, energy dispersive analysis and transmission electron microscopy. Optical spectroscopy revealed that core–shells show an absorption peak at 750 nm emission located around 800 nm after 6 min irradiation. With continued treatment, the NIR luminescence first vanished but it was revived 12 min irradiation, which 100 nm red shifted. This new type in Ag2S sizes greater than 5 nm is due to proximity highly deficient CdS strong stable for more 6 months water. A mechanism has been suggested this emission.
sci-hub.se 参考文章(24)
M. Molaei, A.R. Bahador, M. Karimipour, Green synthesis of ZnSe and core-shell ZnSe@ZnS nanocrystals (NCs) using a new, rapid and room temperature photochemical approach Journal of Luminescence. ,vol. 166, pp. 101- 105 ,(2015) , 10.1016/J.JLUMIN.2015.05.019
Chunlin Bao, Guoxing Zhu, Mengqi Shen, Miaomiao Liu, Peng Xiao, Microwave-assistant route to hybrid semiconductor nanocrystals with quasi solution-solid-solid mechanism: Microwave-assistant route to hybrid semiconductor nanocrystals… Crystal Research and Technology. ,vol. 49, pp. 431- 434 ,(2014) , 10.1002/CRAT.201400072
Shutang Chen, Sravan Thota, Gabriella Reggiano, Jing Zhao, Generalized seeded growth of Ag-based metal chalcogenide nanorods via controlled chalcogenization of the seeds Journal of Materials Chemistry C. ,vol. 3, pp. 11842- 11849 ,(2015) , 10.1039/C5TC02904J
Yejun Zhang, Shuling Shen, Qiangbin Wang, Controllable growth of Ag2S–CdS heteronanostructures CrystEngComm. ,vol. 16, pp. 9501- 9505 ,(2014) , 10.1039/C4CE00694A
Fatma Demir Duman, Ibrahim Hocaoglu, Deniz Gulfem Ozturk, Devrim Gozuacik, Alper Kiraz, Havva Yagci Acar, Highly luminescent and cytocompatible cationic Ag2S NIR-emitting quantum dots for optical imaging and gene transfection Nanoscale. ,vol. 7, pp. 11352- 11362 ,(2015) , 10.1039/C5NR00189G
D. Vasudevan, Rohit Ranganathan Gaddam, Adrian Trinchi, Ivan Cole, Core-shell quantum dots: Properties and applications Journal of Alloys and Compounds. ,vol. 636, pp. 395- 404 ,(2015) , 10.1016/J.JALLCOM.2015.02.102
I. Kornarakis, I. N. Lykakis, N. Vordos, G. S. Armatas, Efficient visible-light photocatalytic activity by band alignment in mesoporous ternary polyoxometalate–Ag2S–CdS semiconductors Nanoscale. ,vol. 6, pp. 8694- 8703 ,(2014) , 10.1039/C4NR01094A
Yanxia Zhao, Zhenmin Song, Phase transfer-based synthesis of highly stable, biocompatible and the second near-infrared-emitting silver sulfide quantum dots Materials Letters. ,vol. 126, pp. 78- 80 ,(2014) , 10.1016/J.MATLET.2014.04.014
K. Srinivasan, C. Thiruppathiraja, K. Subramanian, K. Dinakaran, Sensitive detection of C. parvum using near infrared emitting Ag2S@silica core–shell nanospheres RSC Advances. ,vol. 4, pp. 62399- 62403 ,(2014) , 10.1039/C4RA10833G
Shancheng Yan, Kai Shen, Xin Xu, Yi Shi, Jiansheng Wu, Zhongdang Xiao, Formation of Ag2S nanowires and Ag2S/CdS heterostructures via simple solvothermal route Synthetic Metals. ,vol. 161, pp. 1646- 1650 ,(2011) , 10.1016/J.SYNTHMET.2011.05.034