Achieving Effective Self-Driven X-ray Detection Sensitivity via Pyroelectric–Photovoltaic Coupling in a Layered Perovskite Pyroelectric,ACS Energy Letters

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Achieving Effective Self-Driven X-ray Detection Sensitivity via Pyroelectric–Photovoltaic Coupling in a Layered Perovskite Pyroelectric
ACS Energy Letters ( IF 19.3 ) Pub Date : 2024-01-08 , DOI: 10.1021/acsenergylett.3c02456
Xi Zeng _{1,

2} , Yi Liu _{1,

2} , Yaoyao Chen ₁ , Qingshun Fan ₁ , Tian Yang ₁ , Liwei Tang _{1,

2} , Wuqian Guo _{1,

2} , Yu Ma _{1,

2} , Junhua Luo _{1,

2,

3} , Zhihua Sun _{1,

2,

3}

Affiliation

X-ray detection plays a significant role in industry and medicine, while it remains challenging to implement highly sensitive X-ray detection without an external source. Here, we have successfully achieved strong X-ray-induced pyroelectric–photovoltaic coupling in a layered perovskite, (DFBZA)₂PbCl₄ (DFBZA = 2,4-difluorobenzylamine), serving as an effective self-powered X-ray detection pathway. (DFBZA)₂PbCl₄ is a room-temperature pyroelectric with strong photoexcited pyroelectricity, of which the detecting capacity (F_D) reaches up to ∼3.32 × 10^–5 Pa^–0.5 in the UV–NIR spectral region. Strikingly, its pyroelectric–photovoltaic coupling leads to a high X-ray sensitivity of ∼293 μC Gy^–1 cm^–2, on par with those of the highest-level self-powered X-ray detectors. This enhanced sensitivity by pyroelectric–photovoltaic coupling surpasses the individual photovoltaics by 290%, creating a brand-new pathway different from the previous mechanism. As the first study of X-ray-induced pyroelectric–photovoltaic coupling, our work furnishes a new pattern for sensitive self-driven X-ray detectors and advances their potential for smart device applications.

中文翻译：

通过层状钙钛矿热释电中的热释电-光伏耦合实现有效的自驱动 X 射线检测灵敏度

X 射线检测在工业和医学中发挥着重要作用，但在没有外部源的情况下实现高灵敏度 X 射线检测仍然具有挑战性。在这里，我们成功地在层状钙钛矿（DFBZA） ₂ PbCl ₄ （DFBZA = 2,4-二氟苄胺）中实现了强X射线诱导的热电-光伏耦合，作为有效的自供电X射线检测途径。 (DFBZA) ₂ PbCl ₄是一种具有强光生热电性的室温热释电体，其在UV-NIR光谱区的检测能力( F _D ) 高达∼3.32 × 10 ^–5 Pa ^–0.5 。引人注目的是，其热释电-光伏耦合导致 X 射线灵敏度高达 ∼293 μC Gy ^–1 cm ^–2，与最高水平的自供电 X 射线探测器相当。这种通过热释电-光伏耦合增强的灵敏度超过了单个光伏器件290%，创造了一条不同于之前机制的全新途径。作为 X 射线引起的热电-光伏耦合的首次研究，我们的工作为灵敏的自驱动 X 射线探测器提供了一种新模式，并提高了它们在智能设备应用中的潜力。

更新日期：2024-01-08

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