当前位置：
X-MOL 学术
›
J. Phys. Chem. C
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Intraband Mid-Infrared Transitions in Ag2Se Nanocrystals: Potential and Limitations for Hg-Free Low-Cost Photodetection
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2018-08-01 , DOI: 10.1021/acs.jpcc.8b05699 Junling Qu 1 , Nicolas Goubet 1, 2 , Clément Livache 1, 2 , Bertille Martinez 1, 2 , Dylan Amelot 1 , Charlie Gréboval 1 , Audrey Chu 1 , Julien Ramade 1 , Hervé Cruguel 1 , Sandrine Ithurria 2 , Mathieu G. Silly 3 , Emmanuel Lhuillier 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2018-08-01 , DOI: 10.1021/acs.jpcc.8b05699 Junling Qu 1 , Nicolas Goubet 1, 2 , Clément Livache 1, 2 , Bertille Martinez 1, 2 , Dylan Amelot 1 , Charlie Gréboval 1 , Audrey Chu 1 , Julien Ramade 1 , Hervé Cruguel 1 , Sandrine Ithurria 2 , Mathieu G. Silly 3 , Emmanuel Lhuillier 1
Affiliation
|
Infrared photodetection based on colloidal nanoparticles is a promising path toward low-cost devices. However, mid-infrared absorption relies on interband transitions in heavy metal-based materials, which is a major flaw for the development toward mass market. In the quest of mercury-free infrared active colloidal materials, we here investigate Ag2Se nanoparticles presenting intraband transition between 3 and 15 μm. With photoemission and infrared spectroscopy, we are able to propose an electronic spectrum of the material in the absolute energy scale. We also investigate the origin of doping and demonstrate that it results from a cation excess under the Ag+ form. We demonstrate photoconduction into this material under resonant excitation of the intraband transition. However, performances are currently quite weak with (i) a slow photoresponse (several seconds) and (ii) some electrochemical instabilities at room temperature.
中文翻译：
Ag 2 Se纳米晶体中的带内中红外跃迁：无汞低成本光电检测的潜力和局限性
基于胶体纳米粒子的红外光电检测是走向低成本设备的有希望的途径。然而，中红外吸收依赖于重金属基材料的带间跃迁，这是向大众市场发展的主要缺陷。为了寻求无汞的红外活性胶体材料，我们在这里研究了Ag 2 Se纳米颗粒，它们呈现3至15μm的带内跃迁。借助光发射和红外光谱，我们能够在绝对能量范围内提出材料的电子光谱。我们还研究了掺杂的起源，并证明了它是由Ag +下阳离子过量引起的。形式。我们展示了在带内跃迁的共振激发下光电导转变为这种材料。但是，目前的性能非常差，因为（i）缓慢的光响应（几秒钟）和（ii）在室温下有些电化学不稳定。
更新日期：2018-08-02
中文翻译：
Ag 2 Se纳米晶体中的带内中红外跃迁：无汞低成本光电检测的潜力和局限性
基于胶体纳米粒子的红外光电检测是走向低成本设备的有希望的途径。然而，中红外吸收依赖于重金属基材料的带间跃迁，这是向大众市场发展的主要缺陷。为了寻求无汞的红外活性胶体材料，我们在这里研究了Ag 2 Se纳米颗粒，它们呈现3至15μm的带内跃迁。借助光发射和红外光谱，我们能够在绝对能量范围内提出材料的电子光谱。我们还研究了掺杂的起源，并证明了它是由Ag +下阳离子过量引起的。形式。我们展示了在带内跃迁的共振激发下光电导转变为这种材料。但是，目前的性能非常差，因为（i）缓慢的光响应（几秒钟）和（ii）在室温下有些电化学不稳定。
京公网安备 11010802027423号