As a coupling effect of pyroelectric and photoelectric effect, pyro‐phototronic effect has demonstrated an excellent tuning role for fast response p–n junction photodetectors (PDs). Here, a comprehensive pyro‐phototronic effect is utilized to design and fabricate a self‐powered and flexible ultraviolet PD based on the ZnO/Ag Schottky junction. By using the primary pyroelectric effect, the maximal transient photoresponsivity of the self‐powered PDs can reach up to 1.25 mA W⁻¹ for 325 nm illumination, which is improved by 1465% relative to that obtained from the steady‐state signal. The relative persistent secondary pyroelectric effect weakens the height of Schottky barrier, leading to a reduction of the steady‐state photocurrent with an increase in the power density. When the power density is large enough, the steady‐state photocurrent turns into a reverse direction. The corresponding tuning mechanisms of the comprehensive pyro‐phototronic effect on transient and steady‐state photocurrent are revealed based on the bandgap diagrams. The results may help us to further clarify the mechanism of the pyro‐phototronic effect on the photocurrent and also provide a potential way to optimize the performance of self‐powered PDs.

中文翻译：

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具有ZnO / Ag肖特基结的综合热释光电子效应增强型紫外线检测器

作为热电和光电效应的耦合效应，热光电效应已证明对快速响应的p-n结光电探测器（PD）具有出色的调谐作用。在这里，综合的热释光效应被用于设计和制造基于ZnO / Ag肖特基结的自供电和柔性紫外线PD。通过使用初级热释电效应，自供电PD的最大瞬态光响应度可达到1.25 mA W ^-1对于325 nm照明，与从稳态信号获得的照明相比，提高了1465％。相对持续的次级热释电效应削弱了肖特基势垒的高度，从而导致稳态光电流的减小，并伴随着功率密度的增加。当功率密度足够大时，稳态光电流就会变成相反的方向。根据带隙图揭示了综合热释光效应对瞬态和稳态光电流的相应调节机制。结果可能有助于我们进一步阐明热释光效应对光电流的作用机理，并为优化自供电PD的性能提供潜在途径。