Oraganolead halide perovskites (OHPs) present remarkable optoelectronic properties, and thus possess extensive applications in photovoltaic devices and photodetectors. However, the OHP‐based devices severely suffer from low environmental stability because of water invasion and oxygen erosion to the materials. In this work, this challenge is overcome by utilizing the unique advantages of the microwire structure. OHP microwires, which can be fabricated by simple and low‐cost dip coating method, present superior resistance to moisture as compare to conventional OHP films or nanowires, thanks to their combined properties of high‐crystallinity and low surface‐to‐volume ratio. Photodetectors based on the OHP microwires show outstanding long‐term stability over 90 d even stored with high relative humidity, which is among the highest stability according to the literature reports. Meanwhile, the photodetectors exhibit high and tunable sensory performance by adjusting the distribution of OHP microwires through changing the dip‐coating parameters, for example, the light‐to‐dark current ratio of the device can be over 20 000. The photodetectors with OHP microwaves deposited on polymer substrates also exhibit great mechanical flexibility. Therefore, this work reveals the unique advantages of the low‐cost and readily‐fabricated OHP microwires, and demonstrates their promising applications in optoelectronic devices by developing long‐term stable and tunable high‐performance photodetectors.

中文翻译：

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基于钙钛矿微丝的长期稳定和可调高性能光电探测器

Oraganolead卤化物钙钛矿（OHP）具有出色的光电性能，因此在光伏器件和光电探测器中拥有广泛的应用。但是，基于OHP的设备会因水侵入和材料腐蚀而严重损害其环境稳定性。在这项工作中，通过利用微线结构的独特优势克服了这一挑战。可以通过简单且低成本的浸涂方法制造的OHP微丝，由于其高结晶度和低表面体积比的综合性能，与传统的OHP薄膜或纳米线相比，具有卓越的耐湿性。即使是在相对湿度较高的情况下，基于OHP微丝的光电探测器也能在90 d内表现出出色的长期稳定性，根据文献报道，这是最高的稳定性之一。同时，通过改变浸涂参数来调整OHP微丝的分布，这些光电探测器表现出很高且可调节的感官性能，例如，该器件的明暗电流比可以超过20000。带OHP微波的光电探测器沉积在聚合物基材上的机械柔韧性也很高。因此，这项工作揭示了低成本且易于制造的OHP微线的独特优势，并通过开发长期稳定且可调的高性能光电探测器展示了其在光电设备中的有前途的应用。通过改变浸涂参数来调节OHP微丝的分布，该光电探测器表现出很高且可调节的感官性能，例如，该器件的明暗电流比可超过20000。聚合物基材也表现出很大的机械柔韧性。因此，这项工作揭示了低成本且易于制造的OHP微线的独特优势，并通过开发长期稳定且可调的高性能光电探测器展示了其在光电设备中的有前途的应用。通过改变浸涂参数来调节OHP微丝的分布，该光电探测器表现出很高且可调节的感官性能，例如，该器件的明暗电流比可超过20000。聚合物基材也表现出很大的机械柔韧性。因此，这项工作揭示了低成本且易于制造的OHP微线的独特优势，并通过开发长期稳定且可调的高性能光电探测器展示了其在光电设备中的有前途的应用。