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首页> 外文期刊>Advanced Functional Materials >Facile Fabrication of PbS Nanocrystal:C_(60) Fullerite Broadband Photodetectors with High Detectivity
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Facile Fabrication of PbS Nanocrystal:C_(60) Fullerite Broadband Photodetectors with High Detectivity

机译：PbS纳米晶体：高探测C_（60）富勒岩宽带光电探测器的快速制备

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摘要

Hybrid PbS nanocrystal/C_(60) fullerite photodetectors are fabricated using a simple one-step drop casting procedure onto pre-patterned interdigitated electrodes. The devices exhibit a broad spectral response from the near UV through to the near infrared yielding a detectivity, D, of above 10_(10) Jones from 400 nm to ≈1050 nm. The ability to further extend the spectral response to wavelengths =1350 nm in the near infrared via tuning of the PbS nanocrystal diameter is also demonstrated. The dynamic responses of the devices are presented, exhibiting a fast photocurrent rise time (＜40 ns) followed by a long bi-exponential decay with characteristic lifetimes of t_1 = 5.3 μs ± 0.1 μs and t_2 = 37.8 μs ± 0.7 μs. These devices, which have a detectivity approaching that of commercial detectors, a broader spectral response, and a fast rise time, offer an attractive low-cost solution for large-area broadband photodetectors.
机译：杂化PbS纳米晶体/ C_（60）富勒氏光电探测器是通过简单的一步式浇铸步骤制造到预先构图的叉指电极上的。器件显示出从近紫外光到近红外的宽光谱响应，从而产生从400 nm到≈1050nm的10_（10）Jones以上的探测灵敏度D。还证明了通过调节PbS纳米晶体直径将光谱响应进一步扩展到近红外波长= 1350 nm的能力。给出了器件的动态响应，表现出快速的光电流上升时间（＜40 ns），随后是长双指数衰减，其特征寿命为t_1 = 5.3μs±0.1μs和t_2 = 37.8μs±0.7μs。这些设备具有接近于商用检测器的检测率，更宽的光谱响应和更快的上升时间，为大面积宽带光电检测器提供了一种有吸引力的低成本解决方案。

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  • 来源
    《Advanced Functional Materials》 |2013年第33期|4149-4155|共7页
  • 作者

    Rinku Saran; Muhammad N. Nordin; Richard J. Curry;

  • 作者单位

    Advanced Technology Institute Department of Electronic Engineering University of Surrey Guildford, Surrey, GU2 7XH UK;

    Advanced Technology Institute Department of Electronic Engineering University of Surrey Guildford, Surrey, GU2 7XH UK;

    Advanced Technology Institute Department of Electronic Engineering University of Surrey Guildford, Surrey, GU2 7XH UK;

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