A Highly Stable Photodetector Based on a Lead-Free Double Perovskite Operating at Different Temperatures,The Journal of Physical Chemistry Letters

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A Highly Stable Photodetector Based on a Lead-Free Double Perovskite Operating at Different Temperatures
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-06-11 , DOI: 10.1021/acs.jpclett.1c01416
Hao Li ₁ , Chaojie Pi ₁ , Weiqing Chen ₁ , Min Zhou ₂ , Jumeng Wei ₃ , Jianhong Yi ₁ , Peng Song ₁ , Yakovlev Alexey ₄ , Yang Zhong ₅ , Xue Yu ₁ , Jianbei Qiu ₁ , Xuhui Xu ₁

Affiliation

In recent years, considerable breakthroughs have been achieved in the explored photodetectors with improved performance and stability. However, such devices suffer from the drifting parameters (photoresponsivity, response time, and specific detectivity) in the case of evident operating temperature changes. Here, a double perovskite Cs₂NaBiCl₆-based ultraviolet (UV) photodetector is developed free from thermal disturbance, exhibiting a steady photoresponsivity (≈ 67.98 mA/W) and response time (≈ 16.42 ms) within a wide temperature range (from 273 to 333 K). Further studies demonstrate that the stability of the crystal structure endows the superior photodetection capability. This result unambiguously highlights the great potential of such double perovskite Cs₂NaBiCl₆ compound as an environmentally friendly alternative for UV photodetectors.

中文翻译：

基于在不同温度下工作的无铅双钙钛矿的高稳定性光电探测器

近年来，在探索具有改进性能和稳定性的光电探测器方面取得了相当大的突破。然而，在明显的工作温度变化的情况下，此类设备会受到漂移参数（光响应性、响应时间和比检测率）的影响。在这里，开发了一种双钙钛矿 Cs ₂ NaBiCl ₆基紫外 (UV) 光电探测器，不受热干扰，在很宽的温度范围内（从 273到 333 K）。进一步的研究表明，晶体结构的稳定性赋予了优越的光电探测能力。这一结果明确突出了这种双钙钛矿 Cs ₂的巨大潜力NaBiCl ₆化合物作为紫外光电探测器的环保替代品。

更新日期：2021-06-24

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