期刊
RSC ADVANCES
卷 8, 期 50, 页码 28447-28452出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra03306d
关键词
-
资金
- Korean Ministry of Science and Technology [KK-1607-C11, BS.K18M201, KNI1801, IJ17-05, IJ18-07, KK1802-C00]
- Nano/Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [NRF-2017M3D9A1073502]
- National Research Council of Science & Technology (NST), Republic of Korea [KK1802-C00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Silver sulfide nanoparticles (Ag2S NPs) are currently being explored as infrared active nanomaterials that can provide environmentally stable alternatives to heavy metals such as lead. In this paper, we describe the novel synthesis of Ag2S NPs by using a sonochemistry method and the fabrication of photodetector devices through the integration of Ag2S NPs atop a graphene sheet. We have also synthesized Li-doped Ag2S NPs that exhibited a significantly enhanced photodetector sensitivity via their enhanced absorption ability in the UV-NIR region. First-principles calculations based on a density functional theory formalism indicated that Li-doping produced a dramatic enhancement of NIR photoluminescence of the Ag2S NPs. Finally, high-performance photodetectors based on CVD graphene and Ag2S NPs were demonstrated and investigated; the hybrid photodetectors based on Ag2S NPs and Li-doped Ag2S NPs exhibited a photoresponse of 2723.2 and 4146.0 A W-1 respectively under a light exposure of 0.89 mW cm(-2) at 550 nm. Our novel approach represents a promising and effective method for the synthesis of ecofriendly semiconducting NPs for photoelectric devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据