硫化钯和硒化钯量子点的光致发光
Photoluminescence of PdS and PdSe quantum dots.
作者信息
Wang Xinyu, Qarony Wayesh, Cheng Ping Kwong, Ismail Mohammad, Tsang Yuen Hong
机构信息
The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen Guangdong China
Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong China.
出版信息
RSC Adv. 2019 Nov 21;9(65):38077-38084. doi: 10.1039/c9ra07445g. eCollection 2019 Nov 19.
Group-10 transition metal dichalcogenide (TMD) materials have recently attracted considerable attention in optoelectronics applications. However, so far their quantum dot (QD) counterparts with photoluminescence (PL) nature still remain to be revealed. In this study, 2 typical types of group-10 TMD material (PdS and PdSe) QDs are fabricated liquid exfoliation using -methyl-2-pyrrolidone (NMP) solvent. The absorption and PL spectra of these QD solutions are studied, exhibiting excitation wavelength-dependent behaviors and large Stokes shifts. Furthermore, the quantum yield and decay lifetime are also investigated and analyzed. The obtained results suggest promising optoelectronic applications with group-10 TMD QDs in the future.
第10族过渡金属二硫属化物（TMD）材料最近在光电子应用中引起了相当大的关注。然而，到目前为止，它们具有光致发光（PL）特性的量子点（QD）对应物仍有待揭示。在本研究中，使用N-甲基-2-吡咯烷酮（NMP）溶剂通过液体剥离法制备了2种典型的第10族TMD材料（PdS和PdSe）量子点。研究了这些量子点溶液的吸收光谱和PL光谱，其表现出激发波长依赖性行为和大斯托克斯位移。此外，还对量子产率和衰减寿命进行了研究和分析。所得结果表明，第10族TMD量子点在未来的光电子应用中前景广阔。
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